根据情境及首字母提示填入适当的单词，使短文句意完整、通顺。
Pen pal wanted
   His name is Wang Lei. He is a____ C_____ boy. He wants a pen pal in____ F_______ . He thinks it’s a very____ i______  country and he wants to learn some French. He____ l_____  in Beijing, China with his parents now. He is 14 ____  y______  old and his____ b______  is in November. He can speak Chinese and a little English. What are his ____  l______ ? He likes watching sports games on TV and ____  p_____ computer games with his friends. His favorite subject is computer science. It’s____  f______ . He doesn’t like math, because it’s too difficult.
   Please write to____ h____ and be his pen pal.

菜农在大田中韭菜收获的是绿色的韭菜，而在密闭的暗室中种韭菜收获的却是黄色的韭菜，影响这一差异的生态因素是（  ）

一艘轮船自重4×10⁷N，最大载货量是1.5×10⁸N，则这艘轮船的最大排水量是　____ t，如果船在港口将货物卸下6×10⁷N，则轮船所受浮力是____ N，它的排水体积减少____ ．（设船在内河航行，取g=10 N/kg）

品读下面的一首元曲，回答问题。
天净沙•秋思  马致远
枯藤老树昏鸦，小桥流水人家，古道西风瘦马。夕阳西下，断肠人在天涯。