小儿神经反射的发育，恰当的是（） A.出生1个月出现拥抱反射 B

搜题请搜索小程序“爱下问搜题”

问题单项选择题

小儿神经反射的发育，恰当的是（）

A.出生1个月出现拥抱反射

B.出生2个月出现握持反射

C.1岁以内腹壁反射易引出

D.2岁以下巴氏征阴性

E.3～4个月以内克氏征阳性

答案

参考答案：E

听力题

1. It is worthwhile taking the trouble to help to keep babies clean, healthy and f_____ from sickness.

2 In the past few years, Mr. Collins has e_______ his small business into a big company.

3. Thanks to a sense of h______, she is very popular with her new classmates.

4. It rained; t________ the football match was put off.

5. Drivers are warned to slow down when a_______ the crossroads.

单项选择题

下列不属于平衡分离传质过程的是（）。

A．吸收

B．干燥

C．萃取

D．电泳