精英家教网 > 初中英语 > 题目详情
11.I'm not sure __________ it's a good idea.(  )
A.whatB.howC.whyD.if

分析 我不确定是否它是一个好主意.

解答 答案:D.考查连词.句意"我不确定是否它是一个好主意.".A什么.B怎么.C为什么.D是否、如果.结合语境"我不确定",可知是由if引导的宾语从句.意思是"是否",答案是D.其它不符合.

点评 连词可以表并列、承接、转折、因果、选择、假设、比较、让步等关系,要结合语境,选择合适连词用法.

练习册系列答案
相关习题

科目:初中英语 来源: 题型:选择题

7.--Where         the recorder?I can't see it anywhere.
--I         it right here.But now it's gone.(  )
A.did you put; have putB.have you put; put
C.had you; putD.were you putting; have put

查看答案和解析>>

科目:初中英语 来源: 题型:阅读理解

2.The webs that spiders build to catch insects seem weak.However,the strength of spider thread is greater than steel.Webs can even stand up to very strong storms.
Now a team,headed by Markus Buehler,a scientist at the Massachusetts Institute of Technology,has worked out why the spider web is so strong.It is not just the strength of the thread,but the clever design of the web.The key to a web's success is its ability to keep its shape and strength even after some of the threads break,says Buehler.The scientists found the thread itself has the ability to become softer or firmer.So it can hold different types of heavy things and bear a localized damage (损坏).This localized damage can simply be repaired,rather than replaced,or even left alone if the web continues to work as before.
Buehler's research is mostly theoretical (理论上的),based on computer modeling of material properties (特性) and how they respond to stresses.But in order to test the findings,he and his team literally went into the field.They tested actual spider webs by poking and pulling at them.In all cases,damage was limited to the immediate area they disturbed.
In tests,scientists also used three other strong materials made into the same webs.The spider thread was six times stronger than any other material.More surprisingly,when the scientists took away up to 10percent of the threads from different places,the web didn't become any weaker.Actually,it became up to 10 percent stronger.
The spider web's clever design gives scientists many new ideas.The findings might be used not just for physical objects such as safer buildings,but also in the design of networked systems.For example,a computer experiencing a virus attack could be designed to shut down at once,before its problems get worse."It's a really good chance,"said Buehler."It may give us some new ideas for engineering."

56.Where does the strength of the web threads come from?D
A.Their high stickiness.
B.Their high firmness.
C.Their clever design.
D.Their ability to change in quality.
57.Which word is closest in meaning to the word"disturb"in the 3rd paragraph?A
A.Upsetting.
B.Changing.
C.Moving.
D.Hitting.
58.How many different experiments did Buehler's team do to test their findings?C
A.One.
B.Two.
C.Three.
D.Four.
59.What can be the best title for the passage?B
A.Spider Webs Are Stronger than Steel   
B.Spider Webs Hold Valuable Secrets
C.How Spider Webs Get Their Strength  
D.What Strong Spider Webs Mean to Us.

查看答案和解析>>

科目:初中英语 来源: 题型:阅读理解

19.根据表格内容,选择正确答案.
                Mc Donald's
 If you are busy and want to have a quick lunch,you can go to the Mc Donald's.You can also take it home to eat.
Hamburger:1.5dollars each
French fries:1dollar each bag
Fried chicken leg:2dollars each(on weekdays)
1.5dollars each (on weekends)
Telephone:7645321
         Cici Dessert House
  After dinner,would you like some dessert?Please come to Cici Dessert House.The dessert is great.And also you can enjoy music here.
Strawberry ice cream:7 RMB each
Orange juice:5 RMB each glass
Green tea:10 RMB each cup
Telephone:3678905
        Jiahe Dumpling House
  Do you like eating dumplings?Please come to Jiahe Dumpling House.There are different kinds of dumplings and there are really nice:
Beef and onion dumplings:
                   10 yuan for 20
Chicken and tomato dumplings:
                   10 yuan for 30.
Telephone:3227228
        Lanzhou Noodle Room
  In China,many people like noodles for lunch.In our room,you can eat two kinds of noodles.
Chicken and cabbage noodles:
10 yuan for a small bowl and 16 yuan for a large bowl
Egg and tomato noodles:
8 yuan for a small bowl and 12 yuan for a large bowl
Telephone:4876590
76.How much is each fried chicken leg on Saturday?A
A.1.5.
B.2.
C.2.5.
D.3.
77.How many kinds of dumplings are there in Jiahe Dumpling House?A
A.Two.
B.Three.
C.Four.
D.Five
78.You can callB if you like eating noodles.
A.7645321     
B.3227228       
C.4876590
D.3678905
79.If you eat two small bowls of egg and tomato noodles,you need to payB.
A.¥10.
B.¥16.
C.¥20
D.¥22
80.Which of the following is true?B
A.You can call 3227228for some orange juice.
B.You can enjoy music in Cici Dessert House.
C.Green tea is 5RMB each cup on Sunday.
D.If you would like some dessert,you can go to the Mc Donald's.

查看答案和解析>>

科目:初中英语 来源: 题型:填空题

6.他不仅有礼貌而且乐于助人.He is not only polite but also helpful..

查看答案和解析>>

科目:初中英语 来源: 题型:填空题

16.中国梦是和平、发展、共赢的梦,与包括美国梦在内的世界各国人民的美好梦想相通.
The Chinese dream is about peace,development,and win-win results,and itisconnectedtobeautiful dreams of people in other countries,including the American dream.

查看答案和解析>>

科目:初中英语 来源: 题型:填空题

3.在沙发上有八本英英词典.
There are eight English-Englishdictionaries on thesofa.

查看答案和解析>>

科目:初中英语 来源: 题型:选择题

20.I think Kate is better at playing basketball because she is ______than Jenny.(  )
A.shorterB.quieterC.tallerD.more outgoing

查看答案和解析>>

科目:初中英语 来源: 题型:单词造句

1.had,we,very,something,special (.)We had something very special.

查看答案和解析>>

同步练习册答案