光缆成本高,适合用在距离近、容量小的情况下。
A. 对
B. 错
2. Complete the sentences with the phrases and expressions from Reading 2. Their meanings and paragraph numbers have been given in brackets.1) The unexpected visitor has disrupted my schedule. I have to_________________ late to prepare tomorrow's academic speech. (not go to bed; Para. 5)2) Old age brings with it__________________ physical threats, and among the most common is cardiovascular diseases. (a large number of; Para. 5)3) Watching the tides (潮汐)_________________ so magnificently fills me with an inner contentment that I find nowhere else. (rise and fall; Para. 7)4) Bodybuilding can be very useful, and is highly recommended. ________________ reshaping your body, it tends to improve your general well-being. (As well as; Para. 10)5) Competitive sports brought fame and fortune to very few people, but for the vast majority it meant__________________ sweat and tears. (only; Para. 11)6) People want to be able to have instant access to reports or books that promise to solve their problems_________________. (very quickly; Para. 11)
B. Complete the sentences by choosing the proper words with the suffix “-ive” or “-ic” from above. Change the form where necessary.1) Now we could avoid risk of a(n) ____________ reaction to medication with this new health insurance IC card, because our health data has been stored on the cards.2) You should let go of those_____________ thoughts in front of hardship, because tomorrow will be a new beginning.3) This sort of____________ evolution has probably helped humans adapt to lots of new foods.4) In the field of academic research, and especially when being confronted with so much superstitious (迷信的) thought, a true___________ spirit is highly valued.5) As for human potential, we often think about our_____________ abilities; it's our abilities for a more advanced understanding about the world that distinguishes us from animals.
A. Match the following words with the corresponding meanings.