[题目]Seeing their teacher into the classroom, they stopped at once.A．walk; telling B．entering; to speakC．enter; to tell D．walking; talking 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】Seeing their teacher _______ into the classroom, they stopped _______ at once.

A．walk; telling B．entering; to speak

C．enter; to tell D．walking; talking

【答案】D

【解析】

试题解析：

句意:看到老师走进教室,他们立刻停止了谈话。see sb doing sth：看见某人正在做某事；see sb do sth:看见某人做过某事。stop doing sth ：停止正在做某事；stop to do sth:停下来去做另一件事情。故选D

练习册系列答案

A．has；in

B．with；on

C．has；under

D．with；in

【题目】—Would you like______ camping with me?

—I’d like to. But I’m busy______ my homework.

A．to go; to do B．to go; doing

C．going; to do D．going; doing

【题目】
Most of us have three meals a day .We take food for granted(想当然)。And we don't think about it. 1 experts argue a food crisis(危机)is coming.This crisis is going to make us 2the way we think about food.
Food is in great need 3 a growing of world population.By 1960,the population was three billion.It doubled to six billion by 1999.By 2050,this planet will need to 4 at least nine billion people.As a result,the food prices get higher and higher.
So,what can a 5 ,crowed world do?One suggestion is to eat 6 meat.Meat uses more natural resources(资源)than grains(谷物) .It requires more 7 to produce one pound of meat than to produce one pound of grain. It also requires between 5 and 10 times more 8 than vegetables. So ,eating less meat will 9 more land for farming,and it will save water.
To eats less meat,people will need to change their eating habits. That will not be 10 .Americans, for example,have 11loved meat. In general, They eat twice as much meat as people in other countries.At the same time,in developing countries like China and Brazil,sales of meat have doubled in the last 20 years. 12 will double again by 2050.Growing need of meat will13 to put pressure on natural resources.
World population is increasing,resources are becoming fewer,and food prices are rising.Therefore, we need to rethink 14 we eat every day. For meat lovers, we don’t need to give up meat 15 .But we need to eat more grains and less meat.

（1）A.And B.But C.Or D.Until
（2）A.change B.find C.get D.tell
（3）A.instead of B.thanks to C.because of D.as for
（4）A.help B.have C.feed D.meet
（5）A.busy B.tired C.thirsty D.hungry
（6）A.less B.more C.much D.little
（7）A.time B.land C.people D.place
（8）A.air B.meat C.money D.water
（9）A.provide B.produce C.waste D.need
（10）A.important B.hard C.easy D.necessary
（11）A.never B.seldom C.hardly D.always
（12）A.It B.They C.We D.That
（13）A.continue B.stop C.have D.start
（14）A.how B.when C.what D.where
（15）A.quickly B.completely C.finally D.especially