豆蔻、肉豆蔻都具有的功效是（） A.芳香化湿 B.涩肠止泻 C.温中行气 D.醒脾开

用所给的词的适当形式填空。

1. Because of the heavy rain, the river had risen by ten ____ by midnight. (foot)

2. Not all people know earthquakes are caused by the ____ of plates. (move)

3. Sometimes it is really difficult to predict a ____ disaster. (nature)

4. Almost all the buildings in the city were ____ destroyed in the earthquake. (complete)

5. — I'm sorry to have kept you ____ so long. (wait)

    — I have been here just for a few minutes.

在同一时刻，某人身高1.6m，影长1m，一塔的影长25m，则这座塔高______m．

地黄来源于( )

A．糊粉粒
B．纤维管胞
C．菌丝
D．花粉粒
E．木栓细胞

学校教育

管路系统的特性曲线是随着（）的增加而上升。

A、流量

B、扬程

C、轴功率

D、效率