我国吐鲁番盆地有“早穿皮袄午穿纱”的说法，这说明当地[ ]
A．气温年较差大
B．气温日较差大
C．日平均气温低
D．年平均气温低
答案：B
People are recycling many things which they away in the past.
A．had thrown
B．will be throwing
C．were throwing
D．would have thrown
胆囊收缩后产生多大的内压，促使胆汁排至十二指肠
A．20cmH2O
B．10cmH2O
C．30cmH2O
D．40cmH2O
