题目内容

某小组有3名男生,4名女生,从中任选一名学生去听讲座,则不同的选法种数是( )

A. 3
B. 4
C. 7
D. 12

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某小组有5名男生,6名女生,从中任选一名学生去听讲座,则不同的选法种数是( )

A. 5
B. 7
C. 11
D. 30

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Listen to the following transmissions and fill in the blank with missing words.If we continue to make orbits we will ____________________by the time we land.

Listen to the following transmissions and fill in the blank with missing words.Request the longest runway and vectors for a ____________