A．how oldB．how manyC．what
A. how old
B. how many
C. what
对于老人让年轻人捡起一粒沙的要求，年轻人觉得：
A. 又有趣
B. 太容易
C. 没意义
D. 不现实
Para. 4 mainly tells us
A. jatropha's bright future with its advantages.
B. jatropha's long history as a biofuel.
C. jatropha's advantages as a biofuel.
D. many cloned prolific varieties of jatropha in India.
Which of the following is the biggest shift of the ranking formula？
A. Evaluating colleges by using statistical data as part of the ranking methodology.
B. Evaluating colleges by using the online version in the ranking as a pioneering step.
C. Evaluating colleges less by the diligence of the students the school attracts.
D. Evaluating colleges more by the success the school achieves in graduating students.
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