题目：
| Questions 27-30 |
A．(A) Pollution and population explosion.
B．(B) Universal love and understanding between people.
C．(C) Advice and suggestions for their children.
D．(D) Responsibilities for one another regardless of race, colour or nationality.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：B
