Which of the following is the author's primary concern regarding the application of the new technology？
A. The expansion of the new technology may not bring profits to the companies.
B. Most people who use the technology will not have a baby as they want.
C. The effect of the new technology still needs to be carefully examined.
D. Increasing use of the technology may disturb the sex balance in the population.
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The main idea of this passage is that ______.
A. TV and radio can amuse us with beautiful songs and music
B. TV and radio have weakened our interest in entertaining ourselves
C. people should not be too lazy or embarrassed to sing
D. parents should sing songs and read books aloud to their children
The sperm-separation technique is based on the fact that the chromosomes responsible for babies' sex ______.
A. are of different shapes
B. are of different sizes
C. can be identified
D. can be reproduced
个人抵押授信贷款的借款人只需要一次性地向银行申请办理个人抵押授信贷款手续，取得授信额度后，便可以在有效期间和贷款额度内循环使用。()
A. 正确
B. 错误
According to the passage, Indians ______.
A. only sing songs in Hollywood
B. are no longer fond of music
C. only sing and dance in villages
D. don't sing much nowadays
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