题目

阅读下面短文，从下面每小题的A、B、C、D四个选项中选出最佳选项。 Hereare some after-school activities. You can choose any one or ones you like tomake your school life more colourful. Join us, please. Name of the club Time Activity Reading Club Monday (3: 00 p. m—5: 00 p. m. Read newspapers, magazines Computer Club Tuesday (3: 20 p. m.—5: 00 p. m.) Learn to use computers Art Club Wednesday (3: 10 p. m—4: 50 p. m.) Draw all kinds of pictures Singing Club Thursday (3: 00 p. m—4: 00 p. m函数的单调递减区间是（   ） A．，+∞）      B．（－∞，      C．（0，         D．[e，+∞）