演示位移传感器的工作原理如图所示，物体M在导轨上平移时，带动滑动变阻器的金属滑杆

按要求写句子。

1. There is a cup of tea on the table. (改为复数形式)

    There _____ _____ of tea on the tables.

2. We need some apples. (对画线部分提问) 

     _____ _____ apples do you need?

3. Put the bananas into the blender. (改为否定句) 

    _____ _____ the bananas into the blender.

4. We need one teaspoon' of honey now. (对画线部分提问) 

    _____ _____ _____ do you need now?

5. Lily needs some help. (改为一般疑问句) 

    _____ Lily_____ _____ help?

为明确患牙的颌位，应作的检查是()

A．咬诊

B．染色检查

C．麻醉测验

D．温度试验

E．电活力测验

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.

中期妊娠引产，羊膜穿刺应

A．不超过2次
B．不超过3次
C．不超过4坎
D．不超过5次
E．不超过6次

邺城