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问题 选择题

一简谐横波正沿x轴的正方向在弹性绳上传播，振源的周期为0 .4 s，波的振幅为0.4 m．在t0时刻波形如图所示，则在t0+0.3 s时

A．质点P正处于波谷

B．质点Q正经过平衡位置向上运动

C．质点Q通过的总路程为1.2 m

D．质点M正处于波谷

答案

BD

该横波沿x轴的正方向传播，经0.3秒波形向x轴的正方向传播四分之三个周期，可知质点M正处于波谷，质点P正处于波峰，由同向性知，质点Q正经过平衡位置向上运动，A错，BD对。波传到Q点需要四分之一周期，即质点Q振动了半个周期，通过的总路程为二倍振幅，0.8m，C错。

单项选择题

三仁汤中具有“宜上、畅中、渗下”作用的药物是

A．杏仁、草蔻仁、薏苡仁

B．杏仁、白蔻仁、冬瓜仁

C．杏仁、白蔻仁、薏苡仁

D．杏仁、桃仁、薏苡仁

E．桃仁、白蔻仁、薏苡仁
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问答题

Turkey’s Bodrum peninsula is different. The tourist boom in this part of the world (1) turned some small villages into resorts yet left neighbouring beaches undisturbed, making it quite (2) southern France or the Spanish Coasts where few stretches of coastline are undevelopeD．
The (3) for this happy set of circumstances is simple. For thousands of years, travel here (4) easier by boat than by lanD．So when mass tourism arrived in the (5) 1980s, there was no coast road for ribbon development to follow. So the peninsula, just (6) hour from Bodrum airport, has not become one long littoral of resort.
The building (7) new hotels has mainly been confined to places easily reached by then relatively (8) roads. Such ease of access has made Gumbet, near Bodrum, a busy resort, while the little fishing village of Gumusluk, 12 miles further west and only recently reachable by (9) , remains tranquil and undisturbeD．
It’s worth thinking carefully about location when planning a family (10) on the peninsulA．Choose a place that is centrally located, preferably out of earshot (11) Bodrum town’s "lively"—which means nosy—nightlife, and you can then use (12) area’s comfortably small scale to your advantage. Today’s new roads mean most places can (13) reached in under an hour by taxi or the ubiquitous dolmus-minibus.
The (14) of facilities at the Tamarisk Beach Hotel near the small village of Ortakent makes (15) a good base. The family-run hotel—rooms and suites are in two-storey buildings (16) by palm trees and flowers in terracotta pots—sits above its own sandy (17) beach, shaded by tamarisk trees and sheltered by nearby islands.
The hotel is (18) child-friendly, too. Children, from infants up to young teenagers, can take part in a (19) of games and activities that include tuition in windsurfing, dinghy (20) catamaran sailing.

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