市场细分的方法，通常有( )等种类。 A．单一标准法 B．综合标准法 C．多样标准

Rose is an American schoolgirl. She is now in Beijing with her parents.

It’s Sunday morning. Rose gets up early in the morning. After breakfast her parents take her to the zoo. They go to see the pandas and other animals. The pandas live only in China. There are not any pandas in America. So they like the pandas best. Outside the zoo gate there is a picture. It’s a picture of panda with “welcome”. In the zoo, Rose sees not only panda but also many other animals.

The panda is round and fat. It looks like a ball. It always moves slowly like a ball rolling. There are also elephants. The elephant is the biggest animal on land. There are many monkeys on the hill. Some of them are sitting in the trees. Some are picking nuts. And the others are running or climbing up the trees. Rose and her parents have a good time in the zoo.

小题1:Rose comes from______.

A. China    B. Beijing      C. America

小题2:When does Rose go to the zoo?

A. On Sunday      B. On Saturday  C. Before breakfast

小题3:What does the panda look like ?

A. It’s like a monkey.  B It’s like a ball. C. It’s like a nut.

小题4:Many monkeys are_____.

A. sitting in the trees    B. picking nuts      C. both A and B

小题5:Rose and her parents are_____ on that day.

A. very busy.       B. very free.   C. very happy

下述哪种情况可引起低渗性脱水（）

A.大量胃肠液丢失

B.经皮肤大量失液

C.髓袢升支功能受损

D.长期使用呋塞米、利尿酸

E.大量体液丢失后只补水

关于肺的描述正确的是（）。

A.位于胸膜腔内，纵隔两侧

B.肺尖达胸廓上口

C.肺纵隔面前部有肺根

D.深吸气时膈面可充满肋膈隐窝

E.肺表面有脏胸膜覆盖

轧钢原料中常见的五大化学元素是（）。

A.碳，硅，锰，磷，硫

B.碳，锰，磷，硫，铜

C.碳，硅，锰，硫，铜

植物油每日最少摄入量应不低于______g。

A．15～20

B．20～30

C．30～40

D．35～45