试题与答案

(1)画出一个显微镜下观察到的洋葱表皮皮细胞图,并注明其基本结构的名称。 (2)

题型:画图题

题目:

(1)画出一个显微镜下观察到的洋葱表皮皮细胞图,并注明其基本结构的名称。

(2)图中具有保护和支持作用的结构是:___________。

(3)在明亮的实验室里,低倍镜下观察洋葱表皮细胞,哪个结构不易看清楚?________________。怎样调节显微镜可以使液泡看清?_________________________。

(4)我们在显微镜下观察到的洋葱鳞片叶表皮细胞和黄瓜果肉细胞在结构上有什么异同?_________________________________________________。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0518/93df8b3b8f2b1f683e356f7cba7c4001.html

下面是错误答案,用来干扰机器的。

(1)SO2 ;(2)CH4;(3)2N;(4)CO2

试题推荐
题型:阅读理解

Hidden in a small street in the south end of Springfield, not far from buildings torn apart by the tornado(龙卷风) earlier this year, Frigo’s is an Italian restaurant right in our own backyard.

Frigo’s is not a tiny place. It provides different kinds of Italian food. There are refrigerator cases full of prepared foods and desserts, and shelves filled with olives and various pasta.

There’s some traditional Italian music and the smell is of olive oil and garlic(大蒜). Above the largest refrigerator case, there’s a chalk board covered with desriptions of more Italian sandwiches than I could remember.

I stepped into Frigo’s almost by accident when I had to stay in Springfield into the evening for an open house at the school where I work. Frigo’s is the perfect place to find something quick to go. There are no tables, so all food is taken out. I also thought it would be a great place to pick up some already-prepared food to bring home for dinner.

I ordered the easiest meal possible: a chicken sandwich and a salad. It cost$4.75 for the sandwich. The salad was$4.99 and didn’t have salad dressing on it. I must have missed the choice of salad dressing on the way out. The sandwich was great—great chicken, excellent tomato sauce and not too much cheese.

I wish I had tried one of the many other sandwiches which include Joe’s Favorite ($5.25-$6.75) and the Dante (King) which is made of turkey breast, roasted red peppers, asiago cheese and choice of dressing.

I have a feeling that I’ll be picking up dinner for me and the kids at Frigo’s soon.

小题1: Who would be most likely to go to eat at Frigo’s?

A.People who want to eat quietly in a nice restaurant.

B.People who want to enjoy home-made food

C.People who like traditional American food

D.People who are fond of Italian food小题2: Which of the following cannot be seen at Frigo’s?

A.A chalk board covered with descriptions of sandwiches

B.Refrigerator cases full of prepared foods and desserts

C.Shelves filled with olives and different kinds of pasta

D.Customers eating happily around tables小题3:How much did the writer pay for his first meal at Frigo’s?

A.$4.75

B.$5.25

C.$9.74

D.$4.99小题4:We can infer that “Joe’s Favorite” and “Dante” are the names of        .

A.sandwiches

B.salads

C.cheese

D.peppers小题5:We can infer from the passage that the writer         .

A.seldom eats out in a restaurant with his family

B.feels very happy that be has found Frigo’s

C.dislikes eating sandwiches

D.lives a very relaxing life

查看答案
微信公众账号搜索答案