单词拼写

1．Those delicious foods are especially ________(令人垂涎的)when someone is hungry.

2．There is a growing t________ towards smaller families.

3．The teacher asked us to make a ________(评论)on the film.

4．The people of the village held parties to celebrate another a________ harvest.

5．There were some ________(人造的)flowers on the table.

6．He was found stealing，and as a c________，he lost his job.

7．Any kind of energy can be t________ into electricity.

8．The shop ordered a great deal of goods to meet the ________(要求)of consumers.

试述同步电动机的构造及特点。