问题 问答题 简答题

肥沃土壤具有的一般特征?

答案

参考答案:

(1)良好的土体构造土体构造,肥沃的旱地土壤一般都具有上虚下实的土体构造,即耕作层疏松、深厚(一般在30cm左右),质地较轻;心土层较紧实,质地较粘。(2)适量协调的土壤养分肥沃土壤的养分含量不在于愈多愈好,而要适量协调,达到一定的水平。(3)良好的物理性质肥沃土壤一般都具有良好的物理性质,诸如质地适中,耕性好,有较多的水稳性团聚体等,有良好的水、气、热状况。

多项选择题
阅读理解

阅读理解

     When first entered, Vanak Restaurant does not look like much of a restaurant, but once the pleasant

smells of kabob(烤肉串)hit the senses, you are incapable of calling it anything less.

     Owned by a local couple, this Persian restaurant has an inviting, homelike atmosphere that many

restaurants lack.

    The space is small with only a few dining tables and nearly no decoration,but the environment is truly

charming.

     Lying in a hardly noticeable street corner,the restaurant still attracts all customers,especially those

experienced in the delights of Middle Eastern cooking.

     A common sight is that of old Persian men sitting in the corner talking loudly about world topics,

watching news events on TV,drinking a black tea known as Persian chai,and reading local Persian

newspapers all the while trying to finish off their plates piled with food.

     The variety of food at the restaurant is limited,but the amount of each dish is fairly large.Most of the

meals can serve two people and are under $10,so not only is it affordable but practical as well.

     The food especially appeals to healthconscious eaters because each dish is very healthy,made with

limited fat and oil and served straight off the grill (烤肉架).

      The main dish that the restaurant is popular for is its kabobs,which are different styles of grilled meat.

     One delicious and extremely healthy dish is the Joojeh Kabob,which is made of grilled chicken pieces

served with either rice or bread.Another great kabob is the Chelo Kabob, a kabob consisting of grilled

beef.

     Although the restaurant is small,the atmosphere and the food is delicious.It is a place that should not

be overlooked.

1. When first entering the restaurant,one can find that it________.

A. is splendidly decorated

B. has pleasant smells of kabobs

C. is crowded with dining tables

D. looks like a common restaurant

2. What activity is also mentioned apart from dining in the restaurant?

A. Watching news events on TV.

B. Drinking a kind of black coffee.

C. Reading local English newspapers.

D. Discussing world topics in low voices.

3. The food of the restaurant ________.

A. is served in small amounts

B. is rather expensive

C. is rich in variety

D. is very healthy

4. What is the dish Joojeh Kabob mainly made of?

A. Rice.    

B. Chicken.

C. Bread.    

D. Beef.