Unit 7 第一课时 一、根据句意及首字母提示，补全下列单词。(53分15分)1Yesterday we visited Tianan Men 2Dont swim in the river because its too 3We should do everything we can do to our environment.4Lets visit Xian because its an _city.5The Sahara is the biggest _in the world.Unit 7 第一课时 二、用括号内所给词的适当形式填空。(53分15分)6This book is as_ _(interesting)as that one.7Which is_ _(big)，the sun or the earth?8Qomolangma is the_ _(tall)mountain in the world.9The weather in Fujian is_ _(warm)than that in Jilin in winter.10Miss Li is the_ _(po
