问题 选择题

下列不属于现代食品保存方法的是(  )

A.脱水

B.冷冻

C.真空包装

D.酒泡

答案

由于各种细菌、霉菌等微生物,接触到食物,并依附其上利用食物中的养分,发育、繁殖.期间会产生很多的生长代谢产物,产生各种各样的味道,如酸、臭等等.因此食物腐败变质是由于微生物的生长和大量繁殖而引起的.根据食物腐败变质的原因,食品保存就要尽量的杀死或抑制微生物的生长和大量繁殖,传统的食品保存方法有盐腌、糖渍、干制、酒泡等.现代的贮存方法主要有罐藏、脱水、冷冻、真空包装、添加防腐剂等.目前已广泛利用酶对食物进行保存,原因是溶菌酶作为防腐剂安全性高.因此下列食品的保存方法中,不属于食品的现代保存方法的是酒泡.

故选D

填空题

根据下面短文内容,在短文的空格处填上一个恰当的词,使短文完整、通顺。

     Now students' English handwriting (书法) gets worse and worse. That makes their teachers feel worried.

Is your English handwriting beautiful? If 1______, here are four steps that really work! 

     ◆ Use paper with lines

     Using paper with lines can keep you writing straight 2______ of up or down when you write English words

or sentences. Those lines on the paper can help you to write words in the right size. Be sure to 3______ the lined space completely. And make sure those capital letters (大写字母) are written properly. 

     ◆ Slow down

     If your writing is hard to read, try slowing down a little. For some kids, going slower makes the handwriting

clear. If you write too 4______, it's hard for you to stop where you should, and even worse, you may make

more 5______ . 

    ◆ Hold your pencil right

    When you hold your pencil the correct way, writing is much 6______ . Some kids press down really hard

when they write. That makes the handwriting not nice. Try to be relaxed and don't hold the pencil so hard.

Let your writing appear nice and clean. If you do so, people will guess you are a student 7______ a good habit. 

    ◆ Draw more pictures

    Drawing can improve your handwriting. You need to use the skills to control (控制) your pencil better

8______ you are drawing pictures. Even though you have no chance to draw at school, you can practice

by 9______ at home.

    Handwriting is very important. Imagine you are a world-famous movie star or a well-known sports player,

what do you do when your 10______ run up to you? Give them your autographs (亲笔签名), of course!

单项选择题