题目内容

19.At that time people would starveif it was hard to find food(如果食物很难找到),especially during the cold winter months.

分析 那个时候如果食物很难找到人们就会挨饿,尤其是在寒冷的冬月.

解答 答案:if it was hard to find food
解析:根据前面的would(will的过去式)可知后面的条件状语从句该使用一般过去时;从句可以使用it作形式主语,动词不定式作真正主语.综上,本题答案为:if it was hard to find food.

点评 本题考查语言交际,做此类题目时一定要清楚各个选项的含义及用法;再结合句意及其它要求确定最终答案.

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9.Hello.I'm Jan from Mrs.Lake's class.My class wants to work together to help the public.We think we have found a great way to do this.Last month we did a class project on the highways near our town.We learned about the Adopt-a-Highway Program.This program brings people together to pick up litter along the roads.We think it would be a great idea for all students in our school to join the program and adopt a highway.
Adopting a highway is not like adopting a pet.When a highway is adopted,only part of the highway is cared for by a group of p eople.The group agrees to work every week to keep its part of the highway clean.Each group gets its own sign that has the name of the group printed on it.The sign is put up at the side of the road.This sign lets drivers know who is keeping that area of the road clean.
The Adopt-a-Highway Program is a great way for people to help their environment look nicer.Also,the government does not have to send out as many road workers.This saves money.Finally,people may try harder to keep roads clean if they see people,especially teenagers like us,cleaning them up.
    We will need helpers to care for our adopted highway.If you want to feel great and keep our roads clean,please come with your parents to the meeting next week.We will meet in Mrs.Lake's room on Wednesday at 6:00 P.M.At the meeting,we will talk about which roads are the dirtiest as a result of people's unkind acts.Then we'll try to pick an area to adopt and clean.
   I look forward to seeing you at the meeting.Remember to keep our roads clean!
4.What is the Adopt-a-Highway Program about?C
A.Giving names to the highways.
B.Drawing pictures of highways.
C.Picking up litter along the roads.
D.Putting up signs near the roads.
5.What should the students do first if they want to join the program?B
A.Pick a spot to care for.
B.Go to a meeting on Wednesday.
C.Write a letter to their parents.
D.Call Mrs.Lake next week.
6.What is the purpose of this speech?A
A.To encourage students to join the program.
B.To introduce the traffic system.
C.To show drivers how to drive safely.
D.To tell a story about adopting a highway.
7.Which of the following can be the best title for the passage?D
A.Adopt-a-Pet                           
B.Volunteers on Roads
C.Ways to Protect the Environment       
D.Adopt-a-Highway Program.
14.Tu Youyou has become the first Chinese woman to win a Nobel Prize,for her work in helping to create an anti-malaria(疟疾) medicine.The 84-year-old's route to the honour has been anything but traditional.In China,she is being called the"three nos"winner:no medical degree,no doctorate,and she's never worked overseas.
In 1967,malaria,a then deadly disease,spread by mosquitoes was decimating Chinese soldiers fighting Americans in the jungles of northern Vietnam.A secret research unit"Mission 523"was formed to find a cure for the illness.Two years later,Tu Youyou was instructed to become the new head of"Mission 523".
"Mission523"read ancient books carefully for a long time to find historical methods of fighting malaria.When she started her search for an anti-malarial drug,more than 240,000compounds(化合物) around the world had already been tested,without any success.Finally,the team found a brief reference to one substance,sweet wormwood(青蒿),which had been used to treat malaria in China around 400AD.The team took out one active compound in wormwood,and then tested it.But nothing was effective until Tu Youyou returned to the original ancient text.After another careful reading,she changed the drug recipe one final time,heating the compound without allowing it to reach boiling point.
After the drug showed promising results in mice and monkeys,Tu Youyou volunteered to be the first human recipient of the new drug."
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Another colleague,Fuming Liao,who has worked with Tu Youyou for more than 40years,describes her as a"tough and stubborn woman".Stubborn enough to spend decades piecing together ancient texts,she applies them to modern scientific practices.The result has saved millions of lives.

52.According to Para.I,we can learn thatC.
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C.The compound needs to be heated to the boiling point to be effective.
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