What must the explorers be, even though they have modern equipment and techniques？
A. Brave and tough.
B. Stubborn and arrogant.
C. Well-liked and humorous.
D. Stout and smart.
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Which of the following is NOT the difficulty we face about nanotech research？
A. How to prolong the 10 to 20 years' time.
B. How to eliminate the public's prejudice.
C. How to solve the problem of big and small.
D. How to get enough manpower and money.
Scientists argue that the genetic testing is not perfect partly because ______.
A. it chiefly centers on predictive gene testing
B. the health care for patients is not professional
C. it may arouse the patients' discomfort mentally
D. it involves the DNA test and biochemistry
Alan's grandpa caught cold last week.
A. 真
B. False
Four members walked out of the session, with the result that the committee did not have a
A. babe
B. backbone
C. quorum
D. apartheid
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