since
before
after
when
第1题：
Medicine Directions
Take two tablets with warm water, followed by one tablet every eight hours, as required. For maximum nighttime and early morning relief, take two tablets at bedtime. Do not exceed six tablets in twenty-four hours.
For children six to twelve years old, give half the adult dosage. For children under six years old consult your doctor.
Reduce dosage if nervousness, restlessness, or sleeplessness occurs.
The label on this medicine bottle clearly warns not to take more than ______.
A．twenty-four tablets a day
B．eight tablets a day
C．six tablets a day
D．three tablets a day
第2题：
26
A. since
B. before
C. ever
D. when
此题是文意理解题。根据题意可知是“从十九世纪五十年代以来”，故应该是A“since”。
第3题：
A.ago
B.before
C.after
D.later
第4题：
Cargo booms must be weight tested to recertify the Safe Working Load（SWL）every ______．
A.Year
B.Two years
C.Four years
D.Five years
第5题：
根据下列材料请回答 31～35 题：
A
Now satellites are helping to forecast the weather．They are in space，and they can reach any part of the world．The satellites take pictures of the atmosphere(大气)，because this is where the weather form．They send these pictures to the weather stations．So meteorologists(气象学家)can see the weather of any part of the world．From the pictures，the scientists can often say how the weather will change．
Today，nearly five hundred weather stations in sixty countries receive satellite pictures．When they receive new pictures，the meteorologists compare them with earlier ones．Perhaps they may find that the clouds have changed during the last few hours．This may mean that the weather on the ground may soon change，too．In their next weather forecast，the meteorologists can say this．
So the weather satellites are a great help to the meteorologists．Before satellites were invented，the scientists could forecast the weather for about 24 0r 48 hours．Now they can make good forecasts for three or five days．Soon，perhaps，they may be able to forecast the weather for a week or more ahead．
第 31 题 Satellites travel______．
A．in space
B．in the atmosphere
C．above the ground
D．above space
第6题：
Clearly the medicine ______.
A．may be dangerous for small children
B．can't be taken by children under twelve years old
C．may be taken by children but not by adults
D．may be taken by adults but not by children
第7题：
__________you suspect something, I may as well tell you the whole truth.
A． Since
B． Until
C． After
D． While
第8题：
Now satellites are 36 to forecast（预报）the weather. They are in space, and they can 37 any part of the world. The satellites take pictures of the atmosphere（大气），38 this is where the weather forms（形成）. They send these 39 to the weather stations. So meteorologists（气象学家）can see the weather of any part of the world. From the pictures, the scientists can often say 40 the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier 41 . Perhaps they may find that the clouds have changed during the last few hours. This may mean that the 42 on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.
So the weather satellites are a great 43 to the meteorologists. 44 __satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may 45 forecast the weather for a week or more ahead（提前）.
36.________________
A. help B. to help C. helped D. helping
第9题：
48___.
A.because
B.before
C.after
D.if
第10题：
The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval ________．
A.They are not subject to permanent magnetism; no check is necessary
B.Semiannually
C.Annually
D.Every five years