第1题:
Though Pasteur was in poor health, he worked hard in order______.
A. to make a living
B. to prevent the dog from rabies
C. to find a good way to cure rabies
D. to protect children from mad dogs
此题为细节题。见第六段句子as he was eager to find a way for curing rabies。
第2题:
The primary reason for placing covers over storage batteries is to ______.
A.Prevent the accumulation of explosive gases
B.Protect the hull from leaking electrolyte
C.Prevent movement of the battery in rough waters
D.Protect against accidental shorting across terminals
第3题:
People are confused in their attempts to control malaria in Europe in the early 1900s, because scientists ______.
A.identified only one mosquito species instead of six species
B.thought only three mosquito species transmitted disease
C.thought there was only one mosquito species
D.did not know what species was being studied
第4题:
第5题:
All electrical appliances aboard a vessel should be grounded to ______.
A.prevent them from falling when the vessel rolls
B.protect personnel from electrical shock
C.increase their operating efficiency
D.prevent unauthorized personnel from operating them
第6题:
We know from the text that the Mars mission is _____.
[A] one of NASA’s internet projects
[B] an expedition to Mars
[C] the infrastructure of the interplanetary Internet
[D] to create an architecture on Mars
本题考查词义的理解。文章五、六段中Mars mission和Mars expedition交替使用,可见是同义,而且第三段首句在具体解释space mission的含义时以火星为例指出它orbiting another planet such as Mars。 所以,正确选项为[B]。[A]、[C]、[D]三项都指的是塞尔夫跟(美)国家宇航局的合作项目。Architecture意为“架构,体系(the structure of a computer system and the way it works)”。
第7题:
One function of a bulwark is to ______.
A.Help keep the deck dry
B.Prevent stress concentrations on the stringer plate
C.Protect against twisting forces exerted on the frame of the vessel
D.Reinforce the side stringers
第8题:
● The completion and approval of one or more () characterizes a project phase.()A.deliverables B.products C.projects D.programs
第9题:
Flame screens are used to ______.
A.contain flammable fumes
B.protect firefightiers from flames
C.prevent flames from entering tanks
D.keep flame and sparks from getting out of an engine’s exhaust system
第10题: