1、Unit 5 Pioneers of FlightKey to ExercisesOpenerA Mighty Airplane Built by Howard Hughes in 1947LengthIt was 220 feet long.HeightIt was higher than a five-story building.WeightIt weig。

2、Unit 5 Pioneers of Flight Key to Exercises Opener A Mighty Airplane Built by Howard Hughes in 1947 Length It was 220 feet long Height It was higher than a five story building Weight It weighed about 6。

3、Unit 2 Tales of True Love Key to Exercises Opener Suggested answers for reference 1. Qian Zhongshu was a Chinese literary scholar and writer, best known for his wit and great academic knowledge. One o。

4、Unit 2 Tales of True Love Key to Exercises Opener Suggested answers for reference 1. Qian Zhongshu was a Chinese literary scholar and writer, best known for his wit and great academic knowledge. One o。

5、Unit 2 Tales of True Love Key to Exercises Opener Suggested answers for reference 1 Qian Zhongshu was a Chinese literary scholar and writer best known for his wit and great academic knowledge One of h。

6、Unit 1 Living Green Key to Exercises Opener Suggested answers for reference 1. There are a lot of simple things we can do to decrease energy consumption. Here are just a few examples: Use energy effic。

7、Unit 6 Maker Movement in China Key to Exercises Opener Suggested answers for reference 1. Ruler, tape, calculator, hammer, pincers, drill, wrench, saw, etc. 2. I once made a kite with knife, scissors。

8、Unit 3 FriendshipKey to ExercisesOpenerSuggested answers for reference1. I like the second best. You know why? Because the quotation tells me that a real friend is there when you are sad, when。

9、Unit 1 Living Green Key to Exercises Opener Suggested answers for reference 1 There are a lot of simple things we can do to decrease energy consumption Here are just a few examples Use energy efficien。

10、Unit 6 Maker Movement in ChinaKey to ExercisesOpenerSuggested answers for reference1. Ruler, tape, calculator, hammer, pincers, drill, wrench, saw, etc.2. I once made a kite with knife, scis。

11、Unit 3 Friendship Key to Exercises Opener Suggested answers for reference 1 I like the second best You know why Because the quotation tells me that a real friend is there when you are sad when you are。

12、Unit 6 Maker Movement in China Key to Exercises Opener Suggested answers for reference 1. Ruler, tape, calculator, hammer, pincers, drill, wrench, saw, etc. 2. I once made a kite with knife, scissors。

13、Unit 2 Book 2 Useful expressionsOverview:1. Friendship is a topic close to all our hearts.2. the source of our happiest moments3. occasionally: now and then4. take sth too much for granted。