单选题 Costs should be cut; ______, the number of staff positions will be reduced.

A、 (A) however
B、 (B) therefore
C、 (C) meanwhile
D、 (D) but

【正确答案】 B

【答案解析】Therefore indicates a cause and effect or a result. Choice (A) indicates an unexpected result. Choice (C) indicates simultaneous occurrence. Choice (D) indicates a contrast.