问题
选择题
The scientists are able to ____________ accurately when the spaceship will reach the moon.
A.accumulate
B.calculate
C.appoint
D.estimate
答案
答案:B
本题的含义是科学家能够准确地推算出太空飞船到达月球的时间,calculate可以表示推算的含义,故本题选B。