五. 语法填空 (20分)

Many people believe that they __1___ (suppose) to drink eight glasses of water _2___ day, or about two liters.  Why? Because that is___3__they have been told all their lives.  __4__  a new report offers some different advice. The experts say people should obey their bodies; they should drink as__5___water as they feel like drinking.

The report contains some general___6__(suggest). The experts say that women should get about 2.7 liters of water __7___(day). Men should get about 3.7 liters. But wait in each case, that is more than eight glasses. There is an important difference. The report does not tell people how many glasses of water to drink. __8___fact, the experts say that __9___may be impossible to know how many glasses are needed to meet these guidelines. This is because the daily requirement can include the water__10___ (contain) in foods.

1. _________  2. ____________  3. ______________  4. ____________  5. __________

6. _________  7. ____________  8. ______________  9. ____________  10.__________

为了使用方便，钨极的一端常涂有颜色，以便识别，铈钨极为灰色。（）