小儿咽扁桃体发育达高峰的年龄是A．6个月内 B．1岁末 C．3～4岁 D．2～3岁

阅读理解。

     The largest animal ever to live on Earth is the blue whale. It weighs about 80 tons more than 24

elephants. It's more than 30 meters long.A newborn baby whale weighs as much as a big elephant.

     Cats can survive (幸存) falls from a very highplace because they can turn themselves up the rightway

so as to keep bodies safe. One cat fell 32 floors on to the street,but was just hurt a little.

A bear can run as far as a horse.

     A newborn panda is smaller than a mouse, and weighs about 100 grams.

     Elephants are the most careful animals in their love. A male (雄性的) elephant may show his ladylove

for up to three years until the lady takes hislove.They often show their love by touching each other's body.

Usually wolves do not attack (攻击) people. For years a Canadian newspaper says that they would give

anyone quite a lot of money if he could show that a wolf had attacked a person. But nobody could do

that. Wolves do not usually go together though they may do this in winter.

1. How many does a newborn blue whale weigh?

A. 10 tons.

B. As much as a small whale.

C. As much as 10 elephants.

D. As much as a big elephant.

2. Cats can survive falls because______in the fall.

A. they can keep themselves safe

B. they are small

C. they are light

D. they can put something under their bodies

3. Elephants show their love by______

A. looking at each other

B. touching each other

C. moving their bodies

D. all above

4. A male elephant______keep following a ladyelephant to show his love for a long time

 until thelady takes his love.

A. will  

B. won't  

C. shall  

D. doesn't

5.Wolve susually go ether ______

A. in summer

B. in winter

C. when they look for food

D. when.they have babies

气体火焰焊属于（）。

分批法的成本计算对象是______

A．产品品种
B．产品生产步骤
C．产品类别
D．产品批别

变压器绕组中的直流分量使其产生直流偏磁，变压器将出现以下哪些现象（）

A.损耗及温升增加

B.变比改变

C.噪声加大

D.重量改变