through bolts
jack bolts
tap bolts
fitted bolts
第1题：
(A) so long as
(B) unless
(C) so that
(D) because
正确答案：B
解答参考：B.so long as：只要;unless：除非;so that：以便;because：因为。【译文】星期五董事们要开会，除非没有事要讨论。
第2题：
Why does it take long for people to change their food?
A． Because labs are not easily accessible to researchers.
B． Because some people are reluctant to accept the new diet.
C． Because food consumption is a culture of conservation.
D． Because some scientists are against the growing lab meat.
第3题：
A、complacent
B、complicated
C、completed
D、competed
第4题：
Most animals have little connection with animals of different kind, unless they hunt them for food. Sometimes, however, two kinds of animals come together in a partnership ( 伙伴关系 ) which does good to both of them. You may have noticed some birds sitting on the backs of sheep. This is not because they want a ride, but because they find easy food in the parasites (寄生虫 ) on sheep. The sheep allow the birds to do so because they remove the cause of discomfort. So although they can manage without each other, they do better together.
Sometimes an animal has a plant partner. The relationship develops until the two partners cannot manage without each other. This is so in the corals ( 珊瑚 ) of the sea. In their skins they have tiny plants act as "dustman", taking some of the waste products form. the corals and giving in return oxygen which the animal needs to breathe. If the plants are killed, or are ever prevented from lighting so that they cannot live normally, the corals will die.
1、Some birds like to sit on a sheep because ( ).
A、they can eat its parasites
B、 they depend on the sheep for existence
C、 they enjoy traveling with the sheep
D、 they find the position most comfortable
2、The underlined word "they" in the last sentence of the first paragraph refers to ( ).
A、birds and parasites
B、birds and sheep
C、parasites and sheep
D、sheep, birds and parasites
3、What does the second paragraph mainly discuss? ( )
A、Some animals and plants depend on each other for existence.
B、 Some animals and plants develop their relationship easily.
C、 Some plants depend on each other for foo
D、 Some animals live better together.
4、What does this article talk about? ( )
A、Two kinds of animals for a partnership.
B、Most animals only have connection with animals.
C、The connection between the living things.
D、Corals have some connection with plants.
第5题：
Because the timing of injection is crucial, _____ mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.
A.gears
B.rams
C.barrels
D.cams
第6题：
A、expensive
B、noisy
C、convenient
第7题：
The cows jumped upon their masters because______.
A. they were not fed
B. they were so hungry
C. they were whipped so hard by them
D. they were so happy
54．答案为C 从第三段的细节描写可得知奶牛的愤怒是因为遭受了鞭打。因此C为最佳选项。
第8题：
Eat some vegetables and fruit every day because they are (health) food.
第9题：
A it's quite different from what they saw on the website advertisement ;
B it's quite same to what they saw on the website advertisement ;
C it's easy to lose personal information
第10题：
此题为判断题(对，错)。