Raised beds are popular because they（   ）

• A、are efficient
  
  

• B、are cheap
  
  

• C、last long
  
  

• D、contain fertilizers
  
  

The word“confined" (Para. 2) means（   ）

• A、open
  
  

• B、empty
  
  

• C、limited
  
  

• D、occupied
  
  

第六部分:完形補文(第41~50題，每題1.5分，共15分)

下面的短文有10 處空白，每處空白后的括號內有一個詞，請根據短文內容將其正確的形式填入文中，以恢復文章原貌，并將答案寫在答題紙相應位置上。

Water Shortage

Getting water seems (seem) so easy for many people. You will be（ 41 ） (mistake) if you think there is an（ 42 ）(end) supply of water. In fact, the world has a water shortage. Seventy percent of the world is（ 43 ）(cover) in water. But most of it is salt water. Only a small（ 44 ） (percent) is fresh drinking water. Countries（ 45 ）(include) Spain, Italy and South Africa actually import water from countries such as the United States and Australia.（ 46 ） (surprising), 1.1 billion people on earth have difficulty（ 47 ） (get) clean drinking water. This global problem is predicted to get（ 48 ） (bad) as the atmosphere becomes warmer.

Every person in Britain（ 49 ）(use) about 150 litres of water a day. In some countries people only have 5 to 10 litres a day! They would be（ 50 ） (shock) to learn how we waste drinking water.