题目内容
下列哪项不是黏附分子的作用?( )
查看答案
搜索结果不匹配？点我反馈
更多问题
关于整合素分子描述正确的是( )
From "The Story of Dan and Steve"Steve's brother, Dan, is a risk taker. Two years ago, he hiked through the Andes Mountains in Chile with only a backpack and a knife. Four years ago, he learned to scuba dive while on an adventure cruise in Alaska. Recently, he took up skydiving.Why did the writer say that Dan tried hiking, backpacking, scuba diving, and skydiving?
This devastating disease usually appears in middle age with symptoms of clumsiness and forgetfulness. Now Dan's dad is still able to work, but his handwriting has become uncontrollable, and it is difficult for him to sit for long periods without twitching.Why does the writer mention that Dan's father's handwriting has become uncontrollable and that it is difficult for him to sit for long periods without twitching?
When Dan finished school, he started to live the life of a risk taker. "What do I have to lose?" he thought. Steve, on the other hand, was happily married to Jessica. He elected not to have his genes tested but to continue to live the nearly perfect life he and Jessica had always enjoyed.Why did the author use the phrase "on the other hand"?
微信支付 
支付宝支付