听力原文：What was the goal released by the UN leaders at the 2000 Summit about water issues？
(29)
A. To reduce half of the number of people who lack safe drinking water by 2015.
B. To maintain sustainable development of South Africa till 2015.
C. To release a report on water development and water problems in the world.
D. To arouse political desire to meet future water demands.
查看答案
A．digitB．amountC．accountD．budget
A. digit
B. amount
C. account
D. budget
What is the major reason why some doctors give patients potassium chloride？
A. It is used as medicine.
B. It contains no sodium.
C. It makes food tasty.
D. Human body can easily absorb potassium chloride.
听力原文：W: Ken, did you turn in your locker key？
M: No, I got Sam to do it.
Q: What happened to the key？
(13)
A. Sam returned it.
B. It is still with Sam.
C. It is left in the locker.
D. It is still with Karl.
A．It confuses her.B．It embarrasses her.C．It helps her understand the world.D．It helps
A. It confuses her.
B. It embarrasses her.
C. It helps her understand the world.
D. It helps her tolerate rude people.
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