Every morning, we can hear our students books aloud in our school.

填入下面一段文字横线处的语句，最恰当的一句是 （ ）血栓闭塞性脉管炎又称“脉管炎”，虽是一种血管的炎症，但并不是细菌感染引起的的，而是血栓阻塞血管、血流减少所致，主要以下肢为主。脉管炎后期可引起手足发黑、坏死。但 ，如果在早期能明确诊断，及时治疗，可以避免发生严重的后果。

The land in the southwest of China is in great need of _______.— Yes，it hasn’t rained for a long time.

How far is _____ from here to the garden.– _____ about 5 minutes’ walk.

The surprise findings _______ some previous studiesthat have suggested mobiles can cause Alzheimer’s and brain cancer.