有关水合氯醛的描述，哪项正确（） A.口服不易吸收 B.可缩短快动眼睡眠时相 C.长

阅读理解。

     Jane Scott is fourteen and the year before last she began to study in a middle school. She likes dancing

and singing and spends a lot of time on them. But she hates math and does not work hard at it. She thinks

it difficult to learn math. She falls behind (落后) her classmates and once failed the math exam. She decides

to give it up. Her father is angry with her when he knows about it.

      It was Sunday. Mr. Scott gave a call to his sister who teaches math in another school. He hoped she

would come and tell his daughter how to learn math. The woman came quickly and said, "You're a clever

girl, Jane, I'm sure you'll soon do well in math if you work hard at it."

      "I'm afraid I can't, Aunt." said Jane."Girls can't be good at math." "I don't think so." said the woman.

"I was good at it when I was a girl. You must do more exercises and practise a math problem again and

again until you master (掌握) it. Remember: Practice makes perfect (熟能生巧). Well, here's a math

problem. Think about it and practice it again and again, then you'll work it out."

      "OK," said the girl, "Let me try."

     About an hour later, Jane took the exercise book to her aunt and said, "I've done the problem ten times."

      "Well done!" her aunt said happily, "What result did you get?"

      "Ten answers."

1. Jane is weak in _____. [ ]

A. dancing

B. singing

C. math

D. English

2. Jane falls behind her classmates in math because _____.[ ]

A. it takes her much time to learn it

B. she isn't clever enough

C. she spends much time on all her lessons

D. she doesn't work hard at it

3. Mr Scott wanted his sister to help his daughter because _____. [ ]

A. she is a math teacher

B. Jane likes her

C. Jane is afraid of her

D. he knows nobody except her

4. The woman told the girl _____. [ ]

A. it was easy to learn math

B. to work hard at math

C. math was important

D. she was a hard-working girl

5. Which of the following is true? [ ]

A. Jane hasn't learned math yet.

B. Jane thinks girls can do well in math.

C. The woman is not interested in Jane's answers.

D. Jane failed to work out the math problem.

甲亢患者的饮食应给予（）

A.高蛋白、高热量、高维生素

B.高蛋白、高热量、高盐

C.高热量、低蛋白、低盐

D.高热量、低蛋白、高盐

E.低热量、低蛋白、高维生素

熊猫债券是指国际开发机构依法在中国境内发行的、约定在一定期限内还本付息的、以外币计价的债券。（）

建设项目目标的( )是项目管理最基本的方法论。

A．宏观控制
B．微观控制
C．动态控制
D．动态控制

安装在卫生间及厨房内的穿墙套管，其顶部应高出装饰地面（）mm。

A.20

B.40

C.50

D.100