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问题 单项选择题 A1型题

小儿头围与胸围大致相等的年龄是（）

A.6个月

B.1岁

C.1.5岁

D.2岁

E.2.5岁

答案

参考答案：B

解析：出生时胸围略小于头围1～2cm，1岁左右胸围约等于头围，1岁至青春前期胸围应大于头围（约为头围+年龄-1cm）。故选B。

单项选择题

不属于计算机输入设备的是

A．光笔

B．打印机

C．键盘

D．鼠标

E．手写板
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填空题


Throughout history has (1) changed his physical environment in order to improve his (2) of life. With the tools of technology he has (3) many physical features of the earth. He has (4) woodlands and prairies into farms and made lakes and reservoirs (5) of rivers for irrigation purposes or hydroelectric (6) . Man has also modified the face of the earth by (7) marshes and cutting through mountains to (8) roads and railways.
However, man’s (9) to the physical environment have not always had beneficial results. Today, (10) of the air and water is an increasing danger to the health of the (11) . Each day thousands of tons of gases come out of the exhausts of motor vehicles. (12) from factories pollutes the air of industrialized areas and the surrounding (13) of the countryside. The pollution of water is equally harmful. The whole ecological (14) of the sea is being changed and (15) wastes have already made many rivers lifeless.
Now (16) protection is more pressing than ever before. As we know, massive destruction of the environment has brought about (17) effects and even poses a great (18) to man’s existence. Indifference to these problems will mean committing suicide. Therefore, effective (19) should be taken and laws passed to (20) the environment. Otherwise, man is certain to suffer from the serious consequences caused by this lack of care for his living surroundings.
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