
()是由约90余对肾管来执行排泄的功能。
A.海鞘 B.文昌鱼 C.无羊膜动物 D.羊膜动物


A.海鞘 B.文昌鱼 C.无羊膜动物 D.羊膜动物
Vocabulary exercise Complete the sentences with the correct form of the words and expressions below.
alliance clash inspirational liberating rebel resignation resonance assert oneself bring sth. to its knees drop out major in make sense set up
1. Without being able to describe political commitment and with no _________ characters, it's difficult to say what students today stand for.
2. In 1968 the French government _________ by a general strike of workers and students.
3. The two parties formed a(n) ________ to respond to the problem.
4. For many people, listening to their music was a(n) ________ experience.
5. Many students today are even too apathetic to bother________ of college.
6. There were _______ between police and protestors outside the US Embassy.
7. It's impossible for young people to _________ a home on their own because apartments and houses are too expensive.
8. It doesn't ________ for us to rebel against our parents, who are nostalgic for the protests of the 1960s and 1970s.
9. Do we revolt and _________, like all students of generations before?
10. The ________ of the words belongs to another era and doesn't reflect the realities of today.
11. I ________ politics and economics when I was at university.
12. In the 1960s we ________ by protests and demonstrations.
13. The general strike ultimately brought about the ________ of President de Gaulle.