单项选择题

The danger of transplanting animal organs into humans is that______.

A．it is considered ethically wrong
B．it may bring diseases into human bodies
C．it brings parasites into human bodies
D．it does more harm than good to humans

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单项选择题

The word dormant (Line 4, Par

A．5) means______.A. hiddenB. inactiveC. potentialD. devil

单项选择题

Lottery winners may not be happy______.

A．if they quit their job
B．if they move to a splendid house
C．if they spend a lot of money
D．if they are away from others