71.Theearthbecamesov

问题详情：

earth became so v___________ (猛烈的) that it was not clear whether the shape would last or not.

first extremely smell plants m___________ (增加) and filled the oceans with oxygen.

73. It was obvious that water was f___________ (基础的) to the development of life on the earth.

74. When they crossed the Rocky Mountains, they m___________ (设法) to catch sight of some mountain goats.

75. Every one has his weaknesses and s___________.

ouver is Canada’s most beautiful city, s___________ (围绕)by mountains and the Pacific Ocean.

77. Some festivals are held to honour the dead or to satisfy our a___________ (祖先).

78. They have s___________ (轻微地) different attitudes towards life.

79. Henry’d just about given himself up for lost when he was s___________ (发现) by a ship.

80. Jane often o___________ (观察) the chimps’ activities to study their behaviour.

【回答】

ent  iplied   amental  ged  ngths

ounded stors  htly      79.spotted   rves

知识点：其他

题型：单词拼写