题目内容
（请给出正确答案）
Solid-fuel engines are simpler than liquid-fuel engines, ______have important uses.
A．both of them
B．both
C．both of which
D．both all
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更多“Solid-fuel engines are simpler…”相关的问题
The search engines work by means of _________.
A． arranging links to the Internet
B． submitting specific search term
C． updating a knowledge database
D． searching engine spiders
Fire engines and ambulances have ______ over othertraffic.
A) priority
B) urgency
C) superiority
D) emergency
From the passage, we know that web directories are _________.
A． disorganized knowledge datawledge
B． more useful than search engines
C． arranged based on the topic
D． usually maintained automatically
What is the meaning of the word “gadgets” (Paragraph 4)？
[A] devices [B] tools [C] appliances [D] engines
（）
A．Press the CVR ERASE push button for 10 seconds
B．Press the GND CTL push button, make sure that parking brake is applied and press the CVR ERASE push button for 2 seconds
C．Start at least one engine and press on the GND CTL push button for 2 seconds
What did the pilot do with the plane after it took off？
A．He quickly climbed and then stopped the engines.
B．He climbed and then made the plane fall slowly.
C．He took off normally and then cut the engines for 20 seconds.
D．He climbed and then made the plane turn over.
Which of the following statements is NOT true according to the passage？
A．Color probably has an effect on us which we are not conscious of.
B．Yellow fire engines have caused many bad accidents in some advanced communities.
C．People exposed to pure blue start to breathe more slowly.
D．The psychology of color is of some practical use.
So far few details have been reported, but it is feared that at least twenty people lost their lives, among them the pilot, who was killed instantly. The local ambulances and firemen were on the scene within minutes of the crash, but additional help had to be rushed from other areas.
Mr. Lesilie Collins, one of the survivors, told our reporter, "We passengers noticed the engines were making a funny noise. Of course we couldn't see anything because of the fog, but the pilot said there was nothing to worry about. The next thing we know, the engines went dead. There was a rushing noise--and after that I don’t remember any more."
Mr. Collins is now in hospital, being treated for minor injuries. We will be bringing you further news of the crash as we receive it. In the meantime relatives are asked to ring 02-3457211 for information.
The plane was ______.
A．flying some businessmen to London
B．on a regular flight to London
C．returning from a trade fair
D．bound for Carlisle
