Tìm thành ngữ trong đoạn thơ sau, phân biệt với từ ngữ thông thường về cấu tạo và đặc điểm ý nghĩa.

Eo sèo mặt nước buổi đò đông.

Một duyên hai nợ âu đành phận

Năm nắng mười mưa dám quản công.

Dòng điện là gì?

Viết số thích hợp vào chỗ chấm :

1 phút = ……… giây = ………giờ

A. Trần

B. Lê

C. Lý

D. Hồ

Tính:

Trong quá trình truyền sóng, khi gặp vật cản thì sóng bị phản xạ. Tại điểm phản xạ thì sóng tới và sóng phản xạ sẽ:

A. luôn cùng pha.

B. không cùng loại.

C. cùng tần số.

D. luôn ngược pha

Read the passage, and choose the correct answer A, B, C or D for each question.

Insects on the Menu

Humans have a long history of eating insects, and it turns out that they can be a very nutritious part of a person’s regular diet. Insects have a lot of protein, and they are often easier to catch than prey animals. Therefore, it is no wonder that when our ancient ancestors saw some tasty worms or grubs wiggling on the ground, they made a quick snack of them.

In Thailand, insects are a regular part of the street food that can be found. The different insects that people snack on are crickets, grasshoppers, giant water bugs, and assorted worms. They are often deep-fried and salted, so they have a crunchy texture that makes them a perfect snack food. If you can get past the fact that you are eating a cricket, it will crunch in your mouth just like a corn chip!

For a lot of people, however, it is difficult to get over the fear of eating insects. People tend to see insects as invaders, especially when they are crawling on the food that we are about to eat. Therefore, being able to eat insects without feeling disgusted is cultural. Some people cannot eat French cheese or stinky tofu because they weren’t brought up doing so. To many of us, insects fall right into that category, making it difficult to even try them.

If given the chance, though, be courageous. Insects can be nutritious and tasty, so long as you can get over the “yuck” factor.

Which is the reason given for gathering and eating insects?

A. They are very easy to find close to the home.

B. They are more nutritious than most vegetables.

C. They come in all shapes and sizes.

D. They are easier to catch than other prey animals.