—What do you think of the speech given b

题型:选择题

问题:

—What do you think of the speech given by the CEO from Hongkong?

—Excellent, I have never heard           one before.

A.a more interesting

B.the most interesting

C.a more interested

D.the most interested

考点:形容词形容词的比较级形容词的最高级形容词的排序
题型:选择题

在“探究电阻上的电流与电压的关系”的实验中,同学们设计了以下几种不同的方案:

 方案1:拿一个已知阻值的电阻R,利用图甲所示的电路图,用电流表测出电阻R上的电流,电压表测出R两端的电压,进行一次探究,找出三者的关系。

方案2:设计的电路图如图甲,也用一个定值电阻R,通过改变串联电池节数来改变电阻R两端的电压,进行多次测量,探究三者的关系。

方案3:利用图乙所示的电路进行探究,首先用滑动变阻器改变定值电阻R两端的电压,测出每次通过R的电流,然后更换不同阻值,移动P使电压表示数保持不变,测出每次通过不同阻值R的电流,探究三者的关系。

根据你平时的实验经验,结合已学的研究问题的方法,你认为哪个方案最佳?

_________,理由是_________________________________________________________。

题型:选择题

11.Every boy and every girl ___ a new book.

A. are given        B. is given        C. has given         D. have given

12.Each of us ___ a dictionary of this kind.  

We each ___ a dictionary of this kind.

A. has; have        B. have ; have       C. has; has         D. have ; has

13. “All ___ present and all ___ going on well,” our monitor said.

A. is; are           B. are ; are           C. are; is           D. is; is

14. The young ___ happy to give their seats to the old.    

A. is             B. are                C. has            D. have

15. Over sixty percent of the city ____ destroyed in the war. 

Thirty-five percent of the doctors ____ women.   

A. was; was         B. was; were         C. were; were       D. were; was

16.The shoes ___ mine.     This pair of shoes ___ my brother’s.

A. are; is             B. is; is            C. are; are             D. is; are

17.Large quantities of cotton ___ shipped all over the world already.

A large quantity of bamboo ___ used for pipes to carry water.

A. has been; are        B. has been; is      C. have been; is      D. have been; are

18.Setting fire to the public buildings ___ highly dangerous and forbidden by law.

A. are                B. is            C. has               D. were

19. The only means to achieve success ___ to appeal to arms.  

A. is             B. are              C. were                D. have

20. Whisky and soda ___ always his favourite drink.

A. are            B. is              C. be                  D. were

题型:选择题
设a,b∈R,且a>b,则下面不等式一定成立的是(  )
A.a2>b2B.
b
a
<1
C.ac>bcD.a-c>b-c
题型:选择题

慢性胃炎的主要组织病理学特征是()。

A.炎症

B.萎缩

C.糜烂

D.肠化生

E.异型增生

题型:选择题

流速较大,跨度一般不超过(),采用缆道设备比用测船、缆车等进行测验能提高测洪能力及测验精度的测站宜建立水文缆道。

A、500m

B、800m

C、1000m

D、1500m

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