It's important to remember that nutrients have to work ______, and to take too much of one or another can be useless or even dangerous.

The ______ amongst the world's scientists is that the w...

单项选择题The ______ amongst the world's scientists is that the world is likely to warm up over the next few decades.

Given a relatively ______ sentence of 18 years (others ...

单项选择题Given a relatively ______ sentence of 18 years (others were given suspended death sentences), Chen was later released from jail in consideration of age and poor health.

After the students were shot by the military during a d...

单项选择题After the students were shot by the military during a demonstration against the army ______, the girl students dared for the first time to stay out at night on the streets to picket.