阴囊增大，囊性感，透光试验（+）。首先考虑的诊断是（）。 A.睾丸肿瘤 B.鞘膜积液

A placebo is a chemically inert substance prescribed more for the mental relief of a patient than for its effect on the patient’s physical disorder. It is prescribed in the hope of instilling in the patient a positive attitude toward prospects for his or her recovery. In some cases, the placebo actually produces improvement in the patient’s condition. In discussing the use and effect of placebos, a well-known medical researcher recently paid physicians the somewhat offbeat compliment of saying that physicians were the ultimate placebo.
By comparing a physician to a placebo, the researcher sought to imply that

A．physicians should always maintain and communicate an optimistic attitude toward their patients, regardless of the prognosis.

B．the health of some patients can improve simply form their knowledge that they are under a physician’s care.

C．many patients actually suffer from imagined illnesses that are best treated by placebos.

D．physicians could prescribe less medication and achieve the same effect.

E．(E) it is difficult to determine what, if any, effect a physician’s behavior has on a patient’s condition.

有一段粗细均匀的电阻丝，将它接在6伏的电源上时，通过它的电流是0.5安，如果把它对折起来并拧成一股，再接在这个电源上，那么通过它的电流将是[ ]

A．0.5安

B．1安

C．2安

D．0.25安

Being young means having all kinds of possibilities, so you should challenge your limits and go ______ your boundaries.

A．beyond

B．for

C．over

D．above

梨园用来指代戏曲界，那么“杏林”指代的是（）

个人的道德选择能力，集中表现为（）。

A.道德要求

B.道德规范

C.道德品质

D.道德理想