声级计（衡阳HY-104）应用量程挡位（）A、65dB～90dB B、85dB～13

Do you know why different animals or pests (昆虫) have their special colors? Colors in them can protect (保护) them.

Some birds like eating locusts (蝗虫), but birds can’t easily catch them. Why? It’s because locusts change their colors together with the change of the colors of the crops (庄稼).

When crops are green, locusts look green. But as the harvest (收获) time comes, locusts change to the same color as crops have.

If you study the animal life, you’ll find the use of coloring is to protect themselves. Bears, lions and other animals move quietly through forests. Hunters can’t find them easily. This is because ①they have the colors much like the trees.

A kind of fish in the sea can send out a kind of black liquid (液体) when it ②faces danger. While the liquid spread (扩散) over, it can’t be found (被发现). And it immediately swims away. ③It is not strong at all, but it can live up to now.

小题1:根据短文内容完成下列句子

From the passage we learn that locusts ______________to protect themselves.

小题2:写出①句的同义句。

They have the __________ colors _______ the trees have.

小题3:②处faces 的意思是_______________________。

小题4: Why hunters can’t easily find the animals such as bears, lions in the forests?

_____________________________________________________________________

小题5:将③句子译成汉语。

____________________________________________________________________

对于分期付息的债券而言，下列说法中不正确的是（）。

A.随着付息频率的加快，折价发行的债券价值降低

B.随着付息频率的加快，溢价发行的债券价值升高

C.随着付息频率的加快，平价发行的债券价值不变

D.随着付息频率的加快，平价发行的债券价值升高

学校有60人要参加“金孔雀”舞蹈比赛，比赛时要求每排人数即不能少于4人，也不能多于16人，问共有______中排法．

女性，12岁，出生后发现心脏杂音，无明显症状。体格检查：无发绀，胸骨左缘第2肋间听到4级粗糙的喷射性收缩期杂音，向左颈部传导。肺动脉第2音降低。右心导管检查：右心室与肺动脉收缩压差为10.7kPa。该患儿的诊断应是（）

A.室间隔缺损

B.房间隔缺损

C.动脉导管末闭

D.肺动脉瓣口狭窄

E.法乐四联症

配制0.1%苯扎溴铵(新洁尔灭)4000ml，需用5%苯扎溴铵多少毫升()。

A．50

B．60

C．80

D．90

E．100