He gradually ______ that his wife was right and he had to change his way of living.

After some time the second stage of the space shuttle, ...

单项选择题After some time the second stage of the space shuttle, having used up its fuel, just like the booster, separates and ______.

The earthquake happened in south Xinjiang on Feb. 24. T...

单项选择题The earthquake happened in south Xinjiang on Feb. 24. This ______ killed 266 people.

Stressful environment leads to unhealthy behaviors such...

单项选择题Stressful environment leads to unhealthy behaviors such as Ix)or eating habits, which ______ increase the risk of high blood pressure and heart disease.