单项选择题

The numbers 3，10，17，24，31，and 38 are the first six terms of an infinite sequence inwhich each term after the first is 7 greater than the preceding term．What is the 45thterm of the sequence（）

A. 308
B. 311
C. 312
D. 315
E. 318

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单项选择题
LEAGUE RESULTS According to the incomplete table above．If each of the 6 teams in the league played each of the other teams exactly twice and there were no ties．How many games did team X win(Only 2 teams play in a game．)（）

A. 4
B. 5
C. 6
D. 7
E. 10
单项选择题
If a1，a2，a3，…an…is a sequence such that a1=-2 and an+1 is the reciprocal of the square of an for all n≥1，what is the value of a4（）

A.A
B.B
C.C
D.D
E.E
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