注册安全工程师执业资格注册有效期一般为()。
A. 2年
B. 1年
C. 3年
D. 4年
The Mayan calendar far more accurate than the European calendars of the time most probably
A. the Mayan numbers enabled the Mayan priests to study planets
B. the European countries had no interest in founding a calendar
C. the European calendars of the time probably were made by a guess work
D. the year was divided into 18 months of 20 days each with five days left over
提高军队的科学技术含量，加强以信息化为主要标志的军队质量建设，成为世界军事发展的趋势。 ()
A. 正确
B. 错误
第一节 单项填空
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
I will return your dictionary as soon as ______ consulting the new words.
A. I will finish
B. I do finish
C. I finished
D. I finish
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