题目

根据短文内容， 从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。A major source of teen stress is school exams, and test anxiety is not uncommon. When you recognize your teen is under stress, how can parents help your teen stay calm before an exam? Be involved. Parents need to be involved in their teen's work. 71 . What they look for is your presence - to talk, to cry, or simply to sit with them quietly. Communicate openly with your teen. Encourage your teen to express his worries and fears, but don't let them focus on those fears. Hel 红金鱼和黑金鱼一共有42条，其中红金鱼有18条，黑金鱼有多少条？