弹簧测力计是利用弹簧受到的拉力越大，弹簧的____ 越长的道理制成的．

我国宪法和法律所确认并保障的公民权利,包括了政治、经济、文化等各个领域,涵盖家庭生活、学校生活、社会生活等各个方面。这体现了公民权利的

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①There is a ping-pong game on April ____ (twenty-nine)．

②____ Tom ____ (like) the tennis game?　

③Jim ____ (have) an art class every day.

④Do you know his brother is only 5 ____ (year) old?

⑤ My mother wants ____ (have) a party for me.

⑥Those boys and girls are all ____ (China).

⑦ -How many ____ (sweater) do you have?  -Three.

⑧Today is my ____ (twenty) birthday.

⑨They want to have two baseball ____ (game).

⑩When ____ (be) the School Day?