病侧呼吸动度减弱伴叩诊为鼓音、呼吸音消失者，见于()E．
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It is implied that the main impact that gene transfer between crops and weeds could have is.
A. the rapid development of unintended plant hybrids
B. the collapse of the agricultural industry
C. the development of pest and herbicide-resistant weeds
D. the difficulty to determine the given nature of current research
在保证合同中，当事人对保证方式没有约定或者约定不明确的，按照连带责任保证承担保证责任。()
A. 正确
B. 错误
According to the author, Gladwell's new book Outliers is mainly______.
A. about the importance of social arrangements to personal success
B. A descriptive study of exceptionally talented individuals
C. to discuss why some people have more opportunities than others
D. to explain why Bill Gates is much luckier than others
What does the author mean when she says "But my son is eleven years old now"？
A. He is a bit too young to go out alone.
B. He is old enough to be given some freedom now.
C. He has reached the legal age for riding a bike.
D. He can't protect himself from road hazards.
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