1 . This year marks the 51st anniversary of the successful launch of China’s first________(人造卫星), DFH-1. （根据汉语提示单词拼写）

2 . The official refused to give a c______on this political conflict. It was out of place for him to express his opinions in this situation. (根据首字母单词拼写)

3 . Life in senior high school is quite different from that in junior high. For example, choosing a proper optional course is really a c_______(挑战) for freshmen. (根据中英文提示填空)

4 . An expert who had make great __________ (成就) in heart operation was invited to our hospital to exchange his valuable experience with our staff.(根据汉语提示单词拼写)

5 . Among all the Junior Three students,some students have c______ to be recommended(推荐)students to go to high schools,but most of students will go on working hard for their ideal schools. (根据首字母单词拼写)

6 . They are designing a new type of freezer, attempting to satisfy the customers’ ________.（根据句意填空）

7 . Students with good distribution________ (品质) and doings should be praised that to encourage others to learn from them. (根据汉语提示单词拼写)

8 . Winning a gold m_________ in the National Games is considered far more difficult for Chinese Ping-pong players than that in the Olympics. (根据首字母单词拼写)

9 . The teacher reminded Tom to focus his attention_______what she was saying. So all the students looked at him, he became the_______of the class. (用适当的词填空)

10 . An expedition to the South Pole with the great Sir Ernest Shackleton—this is the a________ that I have been dreaming of. （根据首字母单词拼写）