一婴儿能独坐,并坐得很稳,但不会爬,能无意识地发出复音,认识生熟人,但不能听懂自己的

题型:单项选择题 A3/A4型题

问题:

一婴儿能独坐,并坐得很稳,但不会爬,能无意识地发出复音,认识生熟人,但不能听懂自己的名字。

此小儿的最大年龄可能是()

A.5个月

B.6个月

C.7个月

D.8个月

E.9个月

考点:临床执业助理医师第十一章儿科疾病第十一章儿科疾病题库
题型:单项选择题 A3/A4型题
阅读短文,根据文意将适当的选项填入每段前的括号中。
( )1. In the U. S., people prefer waiting for a table to sitting with people they don't know. If you Are sitting at
           a table with people you don't know, it is impolite to light up a cigarette without first asking if it will
           disturb them.
(     )2. At American restaurants and coffee shops you are usually served tap water before you order. You may
           find the bread and butter is free, and if you order coffee, you may get a free refill.
( )3. Most cities and towns have no rules about opening and closing times for stores or restaurants, though
           they usually do mark rules for bars. Especially in large cities, stores may be open 24 hours a day.
(     )4. Serving in restaurants are often large, too large for many people. If you can't finish your meal but would
            like to enjoy the food later, ask your waitress or waiter for a "Doggie bag". It may have a picture of a
            dog on it, but everybody knows you're taking the food for yourself.
(     )5. Tips are not usually add to the check. They are not included in the price of the meal, either. A tip of
           about 15% is expected and you should leave it on the table when you leave. In some restaurants a check
           is brought on a plate and you put your money there. Then the waitress or waiter brings you your change.
A. Water is served first.
B. Tips of meal.
C. What does the American people like to do?
D. Servings in hotels.
E. Regulations about opening and closing times.
题型:单项选择题 A3/A4型题

方程(2x+1)(3x-2)=0的解是______.

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已知R2+有b个中子,核外有a个电子,表示R原子符号正确的是 [ ]

A.

B.

C.

D.

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在野外游玩禁止乱扔烟头,以防发生火灾。你认为烟头引起火灾的主要原因是[ ]

A.提供氧气

B.改变可燃物的着火点

C.提供可燃物

D.使可燃物的温度达到着火点

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进入牙髓的细菌产生的有害物质不包括

A.内毒素

B.胶原酶

C.淀粉酶

D.透明质酸酶

E.硫酸软骨素酶

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