As renewable energy, jatropha
A. has proved to produce the best biofuel in the world.
B. is significantly different from other biofuel sources.
C. sounds so good that it can't become reality.
D. has resulted in a new biofuels movement in the world.
Why was the International Year of Astronomy set to be the year 2009？
A. To make the knowledge of astronomy science receive more recognition.
B. To cherish the contribution to modern astronomy by Galileo and Kepler.
C. To manifest the 400th anniversary of the birth of Galileo and Kepler.
D. To stimulate the modern astronomy to develop more rapidly.
Most of the extrasolar planets already known to us
A. were found by telescopic means.
B. were found by Galileo and Kepler.
C. were found thanks to hi-tech development.
D. were found in the latest two decades.
听力原文：What does the Country Manager usually talk with David about？
(22)
A. Their lives and friends.
B. Marketing strategy and production.
C. Meetings and suppliers.
D. Production and customers.
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