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举一反三
【单选题】In many places water is becoming scarcer. Treating it as a right makes the scarcity worse. Ideally, efficient water use would be encouraged by charging for it, but attempts to do so have mostly proved...
A.
People should only be entitled to certain amount of water free.
B.
People can borrow water from their neighbors when necessary.
C.
People are free to bargain for water in market in their daily lives.
D.
People have the right to trade water to raise water productivity.
【单选题】最有可能的诊断是（） A．前列腺增生 B．尿道狭窄 C．输尿管结石 D．膀胱结石 E．尿道结石
A.
患者，男，30岁，突然发生尿潴留，以往有排尿中断史，检查发现膀胱区膨隆。
【单选题】小肠肠袢在MRI检查中的信号特点是（）
A.
T1WI呈高信号，T2WI呈高信号
B.
T1WI呈高信号，T2WI呈低信号
C.
T1WI呈等信号，T2WI呈高信号
D.
T1WI呈低信号，T2WI呈高信号
E.
T1WI呈低信号，T2WI呈低信号