【单选题】我国目前已经建立了多少个国家级海洋自然保护区?( )
【简答题】听力原文:Q: Why do some young people dislike living with their parents? Why do some young people dislike living with their parents? Because they think the old parents are ______ to them.
【单选题】拉曼型ROTDR温度传感技术中,光缆的铠装需要进行的特殊处理是:
【单选题】Why do some people think hemp is better than trees for paper industry?
A.
It is cheaper to grow hemp than to cut down trees.
B.
More paper can be produced from the same area of land.
C.
Hemp planting can beautify the environment.
D.
Hemp can produce paper of high quality.
【简答题】我国目前已经建立了多少个国家级海洋自然保护区?
【单选题】我国目前已经建立了()个国家级海洋自然保护区。
【简答题】我国目前已经建立了()个国家级海洋自然保护区。 A、20 B、25 C、28 D、30
【简答题】Why do some people dream about money?
【单选题】嘌呤霉素抑制蛋白质生物合成的机制是
A.
抑制氨基酰tRNA合成酶的活性,阻止氨基酰tRNA的合成
B.
其结构与甲硫氨酰-tRNA相似,可和甲硫氨酸竞争与mRNA结合
D.
可与核糖体大亚基“受位”上的氨基酰-RNA形成肽酰嘌呤霉素
【简答题】我国目前已经建立了多少个国家级海洋自然保护区?