单选：西方童话中，猫头鹰常以最聪明的角色出现，是因为猫头鹰（）。A．头脑聪明B．活得长久C．与人长得相似D．经常保持思考的表情

Mr. Tom Forester lived by himself a long way from town. He hardly ever left h...

Shyness is the cause of much unhappiness for a great many people. Shy people ...

细菌细胞膜与霉菌细胞膜一样，都是由蛋白质、磷脂组成，并含有固醇。（）A．正确B．错误

Morgan Rees has always been a good businessman. He used to own three petrol s...

In the United States, it is not customary to telephone someone very early in ...