19．There was a(an．exchange of fire during which the policeman was wounded．——青夏教育精英家教网——

19．There was a（an．exchange of fire during which the policeman was wounded．（change）

18．Everyone believes Harry is one of the greatestengineers in the company．（engine）

17．The group leader expressedconfidence in the ability of the players．（confident）

16．The underground enables local people to spend moreenjoyable holidays．（enjoy）

15．We must always keep in mind：try where possible toreuse paper．（use）

14．Think about it very carefully before youdecide．（decision）

13．A friend ofmine will come to visit Shanghai Disneyland Park soon．（I）

12．I wonder if you have heard from your cousinrecently．（recent）

11．你校的校报英文专栏要介绍科学家屠呦呦，宣传她的事迹．请根据下表罗列的信息写一篇关于屠呦呦的简介．
注意：
1．词数90左右；
2．短文须包括所有要点，不要逐词翻译，可适当发挥，使短文连贯、通顺；
参考词汇：青蒿素artemisinin；疟疾malaria；中药处方traditional Chinese recipes

屠呦呦（Tu Youyou）
身份	中国医学科学家
出生地	中国、浙江宁波
年龄	八十多
工作/成就	收集并研究了2000多种传统中药处方
	发现了青蒿素，可以治愈疟疾
	她的研究都在国内开展
	她的发现拯救了全世界几百万人的性命
	被授予2015诺贝尔医学奖
你对她的评价

10．Parents are busy today．Sometimes they have to leave their children at home alone．For children，it is important to know how to keep themselves safe when they are at home alone．If you are one of them，what should you do？Let me give you some advice．
When you arrive at your home，you should check the doors and windows first．If they are broken，it says someone must have entered．If so，wait outside and tell your parents or the police．If everything appears normal，you should go inside and lock the door quickly．If something seems strange inside，you should ask your neighbour for help and call the police．
If someone knocks at the door，you should identify the visitor before you open the door．This can be done by saying，"Yes，who is it？"You can also look through the peephole to see if you know the visitor．If you don't know the person very well，don't open the door．
You should not allow strangers to enter the house or give out any information about your family．You should be polite when you talk with the stranger，but remain behind the closed door．If the visitor wants to speak to your parents，you should say that the parents can't come to the door at the moment and offer to take a message．

26．The passage is written forC．
A．parents．
B．police．
C．children．
D．strangers．
27．What should children do when they find something unusual at home alone？C
A．Lock the door quickly．
B．Tell their parents immediately．
C．Ask their neighbours for help．
D．Remain behind the closed door．
28．What does the underlined word"identify"mean？A
A．find out who the visitor is
B．keep silent with the visitor
C．refuse to let the visitor in
D．look carefully at the visitor
29．What is the passage mainly about？D
A．How to ask for help．
B．How to talk to strangers．
C．How to be a brave child．
D．How to be safe at home．

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