As we know, too much ________ to Xrays can cause skin burns, cancer or other damage to the body.

The children have been playing with my hat －they’ve knocked it out of ______.

 Be sure to read the _______ carefully before you take the medicine so that it can function better.

.The traffic slowed down because of the heavy snow in Yushu county, presenting a new __________ to the recovery from the earthquake.

There is _________ that her daughter will pass the exam to go abroad to study.