The driver could have survived but he the seat belt．( )A．had been wearingB．hadn't wornC．was wearingD．didn't wear 题目和参考答案——青夏教育精英家教网—

题目内容

6．The driver could have survived but he ____ the seat belt．（　　）

	A．	had been wearing		B．	hadn't worn
	C．	was wearing		D．	didn't wear

分析这位司机本来可以活下来的，但是他没有系安全带．

解答答案：D
句中"could have survived本来可以活下来"表达的是虚拟语气，表示与过去事实相反的情况；答语"but he ____ the seat belt"表达的应该是过去的事实：但是他没系安全带（因此没能活下来）；所以该句要使用一般过去时；故选D

点评本题考查了一般过去时的用法：一般过去时表示过去某个时间发生的动作或存在的状态，通常与表示过去的时间状语（例如：yesterday，last week/month/year，three days ago等）连用；而本句中并没有明显的表示过去的时间状语，所以要根据句意来做出判断．

练习册系列答案

6．It is not their interest but the need of the market _____ influences students'choices of college majors．（　　）

14．Was it the week before _____ you got to know her at a party？（　　）

1．请阐述一件2015年你最期待的事情，谈谈你期待的原因及你在2015年的打算．
注意：1．词数不少于120个；
2．不能使用真实姓名和学校名称．
22．

11．The purpose of the campaign is to raise the public's_______ of the dangers of passive smoking．（　　）

2．教室是我们学生学习活动的最主要场所，简单描述你现在的教室，并发挥想象力，描述你理想中的教室．Classroom is our mainplace for us students to learn and exercise，and you can describe your present classroom briefly and develop imagination to describe your ideal classroom．．

19．面对各种各样的选择，人们往往会举棋不定．（tend）

5．Secret codes （密码）keep messages private．Banks，companies，and government agencies use secret codes in doing business，especially when information is sent by computer．
   People have used secret codes for thousands of years．（36）DCode breaking never lags（落后） far behind code making．The science of creating and reading coded messages is called cryptography．
   There are three main types of cryptography．（37）EFor example，the first letters of"My elephant eats too many eels"Spell out the hidden message"Meet me．"
（38）GYou might represent each letter with a number，for example，Let's number the letters of the alphabet，in order，from 1 to 26．If we substitute a number for each letter，the message"Meet me"would read"13 5 20 13 5．"
   A code uses symbols to replace words，phrases，or sentences．To read the message of a real code，you must have a code book．（39）FFor example，"bridge"might stand for"meet"and"out"might stand for"me．"The message"bridge out"would actually mean"Meet me．"（40）AHowever，it is also hard to keep a code book secret for long．So codes must be changed frequently．

A．It is very hard to break a code without the code book．
B．In any language，some letters are used more than others．
C．Only people who know the keyword can read the message．
D．As long as there have been codes，people have tried to break them．
E．You can hide a message by having the first letters of each word spell it out．
F．With a code book，you might write down words that would stand for other words．
G．Another way to hide a message is to use symbols to stand for specific letters of the alphabet．

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