- can the work be finished?-In two months．( )A．How longB．How oftenC．How soonD．How far 题目和参考答案——青夏教育精英家教网—

题目内容

6．-____________ can the work be finished？
-In two months．（　　）

A．

How long

B．

How often

C．

How soon

D．

How far

分析 -工作多久能完成？
-两个月．

解答答案：C．how long多长时间，how often多久一次，how soon多久，how far多远，结合下文是in+一段时间，提问用疑问词how soon 多久，故答案是C．

点评 How often有"多久一次"的意思．当对频率提问时，我们常用How often．频率副词和短语有often，sometimes，usually，once/twice/three times a week等．
其中：
how soon指某件事情距离现在多久会发生；用in回答，意思是"多久以后"
how long指某件事情持续的时间多长；或者是某样东西的物理长度--回答用一个长度（包括时间长度和空间长度），意思是"多长时间"、"多长"
how often指事情发生的频率如何；表示频率时用"twice a day"、"always"等来回答．意思是"多久（一次）"等等．

练习册系列答案

17．Yesterday I downloaded a new educational program the Internet．Now I can listen and read English on my computer．（　　）

14．-Daniel，come to clean the floor!
-______？I am busy with my homework．（　　）

1．I can't believe my own eyes．The magician changes paper ______ money．（　　）

11．September is theninth（第九） month of the year．

18．---You look so sad．What happened？
---The exam _____ to be much harder than I thought．（　　）

4．The first robots were invented in the 1920s．Robots have appeared in many American films．In some films，they are stronger，faster and cleverer than people．
In real life，robots are mainly used in factories．They do some dangerous and difficult jobs for humans．
Robots also help disabled people，for example，blind people．Today many blind people have a guide dog to help them．In the future，guide dogs might be robot dogs．
One kind of robot guide dog has wheels．It moves in front of the owner．It is very clever．It knows the speed of its owner's walk．The owner wears a special belt （带子）．This belt sends instructions to the owner from the dog，such as"Stop here"，"Turn left"or"Turn right"．
In the United States，another kind of robot helps disabled people to take care of themselves in their daily life．The robot hears the sound of its owner's voice．It follows instructions such as"Turn the page"or"Make a cup of coffee"．
Robots are also used in American hospitals．They can do simple jobs．At one hospital，for example，a robot takes meal from the kitchen to patients'rooms．It never gets lost because this robot has a map of the hospital in its computer memory．
Though robots can help people in many different ways，they will never take the place of humans．

61．From the passage we know robots cannot beA．
A．dangerous animals
B．factory workers
C．guide dogs
62．A robot guide dogA．
A．goes in front of blind people
B．has a map in its head
C．helps patients with their meals
63．The underlined word"disabled"meansC．
A．有害的
B．失灵的
C．残疾的
64．Some disabled people need robots'help toB．
A．become scientists
B．take care of themselves
C．do dangerous jobs
65．In the passage，the writer wants to tell us thatC．
A．robots are stronger and cleverer than humans
B．robots will take the place of humans some day in the future
C．robots can help humans in many different ways．

5．-Could you tell me______？
-Certainly．In half an hour．（　　）

	A．	when will the high speed train arrive
	B．	when the high speed train will arrive
	C．	when would the high speed train arrive
	D．	when the high speed train would arrive

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