时间序列模型

Editors note: This is the third episode of four-part series on verb tenses. Be sure to listen to part one and part two first. For VOA Learning English, this is Everyday Grammar. Today we are going to talk about the perfect verb tenses. Perfect tenses

发表于:2018-11-27 / 阅读(451) / 评论(0) 分类 2016年VOA慢速英语(十二)月

[00:00.00]Questions 15-18 are based on the following News Report. [00:31.40]You now have 20 seconds to read Questions 15-18. [00:38.16]W:In the twentieth century numerous new nations have been formed. [00:46.21]Though their peoples often enjoy [00:50

发表于:2018-12-03 / 阅读(179) / 评论(0) 分类 最新版英语听力教程

[00:03.68]You'll hear three pieces of recorded material. [00:08.33]Before listening to each one,you'll have time to read the questions related to it. [00:14.71]While listening,answer each question by choosing A,B,C or D. [00:21.55]After listening you

发表于:2018-12-03 / 阅读(238) / 评论(0) 分类 最新版英语听力教程

[00:03.68]You'll hear three pieces of recorded material. [00:08.65]Before listening to each one, [00:12.09]you'll have time to read the questions related to it. [00:16.82]While listening,answer each question by choosing A,B,C or D. [00:22.75]After li

发表于:2018-12-03 / 阅读(248) / 评论(0) 分类 最新版英语听力教程

[00:03.58]You will hear three pieces of recorded material. [00:08.33]Before listening to each one,you will have [00:12.41]time to read the questions related to it. [00:16.85]While listening,answer each question by choosing A,B,C or D. [00:23.41]After

发表于:2018-12-03 / 阅读(231) / 评论(0) 分类 最新版英语听力教程

[00:03.89]Section I Listening Comprehension Part A Directions: [00:09.77]For Questions 1- 5, [00:13.30]you'll hear a monologue of a famous chess master. [00:18.26]While you listen,fill out the table with the information you've heard. [00:23.72]Some o

发表于:2018-12-03 / 阅读(215) / 评论(0) 分类 最新版英语听力教程

[00:28.50]You'll hear three pieces of recorded material. [00:33.36]Before listening to each one, [00:36.91]you will have time to read the questions related to it. [00:42.06]While listening,answer each question by choosing A,B,C or D. [00:48.33]After

发表于:2018-12-03 / 阅读(255) / 评论(0) 分类 最新版英语听力教程

Welcome to the second in this three-part Business English Pod series on presenting your ideas presuasively. Last time we heard a bad example and a good example of persuasion. Then we covered the first step of the Monroe Sequence: We learned that to b

发表于:2018-12-05 / 阅读(162) / 评论(0) 分类 商务英语演讲课

图片 by Jason Marshall Its not often someone suggests that knowing some math could make you the life of the party, but thats exactly what Im going to do. Yes, a properly timed delivery of a few fun facts about the famed Fibonacci sequence just migh

发表于:2018-12-07 / 阅读(168) / 评论(0) 分类 数学英语

[00:03.58]M:Section I Listening Comprehension [00:08.15]Part A Directions: [00:11.81]you'll hear a conversation in which Mrs.Long and Dr.Ross [00:17.76]are negotiating an electric project. [00:22.02]Listen to it and [00:24.97]fill out the table with

发表于:2018-12-27 / 阅读(192) / 评论(0) 分类 最新版英语听力教程

Describing Order and Sequence Patrick: Okay, your first task is to put all of these files in order. Maya: Wow, there must be hundreds of files in this storeroom. How am I supposed to organize them? Patrick: Create a basic filing system. Put things in

发表于:2018-12-27 / 阅读(167) / 评论(0) 分类 2014年ESL之商务英语

Section A Directions:In this section,you will hear 8 short conversations and 2 long conversations.At the end of each conversation,one or more questions will be asked about what was said.Both the conversation and the questions will be spoken only once

发表于:2018-12-30 / 阅读(104) / 评论(0) 分类 英语六级听力练习集锦

Section A Directions:In this section,you will hear 8 short conversations and 2 long conversations.At the end of each conversation,one or more questions will be asked about what was said.Both the conversation and the questions will be spoken only once

发表于:2018-12-30 / 阅读(110) / 评论(0) 分类 英语六级听力练习集锦

Section A Directions:In this section,you will hear 8 short conversations and 2 long conversations.At the end of each conversation,one or more questions will be asked about what was said.Both the conversation and the questions will be spoken only once

发表于:2018-12-30 / 阅读(104) / 评论(0) 分类 英语六级听力练习集锦

[00:00.00]1.W:Do you have a calculator that you could lend me for a few days? [00:06.11]I just have no idea where mine is. [00:10.27]M:Well,yes,I have one.But actually my sister is using it now. [00:16.33]Q:What do we learn from this conversation? [0

发表于:2018-12-30 / 阅读(141) / 评论(0) 分类 英语四级听力练习集锦

3 What's the correct time? [A] 10:33 [B ]10:27 [C] 10:30

发表于:2018-12-30 / 阅读(88) / 评论(0) 分类 听听测测

4 What time is it? [A]It is a little after 8:45 [B] It is 5 minutes faster [C] It is a little before 8:45

发表于:2018-12-30 / 阅读(124) / 评论(0) 分类 听听测测

图片 by Jason Marshall Some math is functional. Some math is fun. And some math is simply stunning. If that last description sounds improbable to you, then today just might change your mind. Because now that weve covered enough ground, were going t

发表于:2019-01-02 / 阅读(261) / 评论(0) 分类 数学英语

by Jason Marshall In the last article, we began talking about mathematical sequencesin particular, a type of sequence known as an arithmetic sequence. Today, were going to turn our attention to another type of sequence called a geometric sequence. In

发表于:2019-01-02 / 阅读(202) / 评论(0) 分类 数学英语

17 Where is the conversation taking place? [A ]In a second - hand book shop [B] In a publisher's office [C] In a library 18 Why does the woman mention William Shakespeare? [A] He gave gifts to millions of people [B] He was a very wealthy man in his t

发表于:2019-02-27 / 阅读(214) / 评论(0) 分类 听听测测
学英语单词
-phonic
a son of ebony
abuse of trust
action of pile group
alcoometrical
all bunkum, all humbug
amsterdam type dwarfism
anchor ring
arc pit
atmospheric refraction index
balster
Becilan
bilge pump
branchial ganglion
brokerly
brusquerie
bump somebody off
buoyant smoke signal
charge of the electron
chlorophenindione
cholelitholysis
cold storage buffer
computer assisted collision avoidance
conical combustor
cyanuramides
cyclopic anophthalmia
database design
Disaster B.
do honor to
Duntzenheim
etching reagrnt
farley maidenhair ferns
five-and-tens
flat strainer
fluidity-temperature relationship
four-way interleaved memory
foxberries
garyn
general rights
give sb. a lead
gonococcus vaccine
gustavite
Gymnema hainanense
hanged on
high-frequency bias
Holodorm
Homeria
I am the last man to
ichnite
identifies with
Ijaws
instrumentation complex
interfacing device
interim rugulations
Inverness capes
jcas
Jerez
king post system
knock sb. off his perch
kusum
lepomis macrochiruss
lithium chloroplatinate
magnetosystem
Marles-Weller steering gear
memon
message-distribution objective
military philosophy
multistage method
natural hydrated kaolin
neva
non-judgemental
non-lead
nondirectors
nonverbal behavior
paction
pancreatolysis
parameter binding mode
performance indices
Platycodon glaucus Nak.
ponc
printer spooler
pro-angiosperm
problem orientation
promegaloblast
quasiprobabilities
revolutionary road
Rhaphidophora luchunensis
Rio Tuba
shunt
single suction centrifugal pump
sportscasting
technigluons
text height
time-shared data bus
to all
to friend
truculently
ulcus cancrosum
uninsurance
water resources engineering
windshield wiper motor
zoographist