Dãy số nào dưới đây được viết theo thứ tự từ lớn đến bé:

A. 8,05;  8,76;  8,93; 8,91.

B. 5,494;  5,493;  5,392;  5,001

C. 6,732;  7,002;  7,009; 7,013

D. 1235;  12,47;  12,51;  12,01

-10 < +  54 

Choose the answer that best fits in each gap in the text below

It is back-to-school time in much of the world. Calm, easy mornings are replaced with busy, hurried ones. Children wake up early and get ready for school. Many parents are also getting ready for work, helping their children and preparing food for lunches. ski(32)_______ breakfast to save time. But that may be a big mistake for students.

That is the finding of a 2015 study from Cardiff University in Wales. Researchers there looked at 5000 9-11 year-olds from more than 100 primary schools in the U.K. They looked at what the students ate (33)_______ breakfast and then their grades 6 to 18 months later. They found that the students who ate a healthy breakfast (34)_______ twice as likely to perform above average in educational activities. The researchers also found that unhealthy breakfasts - such as potato chips or a donut did not appear helpful to educational performance.

A good breakfast is not just helpful for school-aged children. We all may gain from eating something healthy first thing in the morning. A study from researchers at the University of Toronto in Canada found that a breakfast rich in protein and complex carbohydrates (35)_______ performance on short- and long-term memory. Carbohydrates and protein are especially important because (36)_______ a major effect on long-term memory.

Question 33:

A. in

B. into

C. with

D. for

Phát biểu nào sau đây là sai?

A. Trong hang động ta nói to thì có âm phản xạ

B. Mọi âm thanh gặp vật chắn đều bị phản xạ trở lại

C. Không có vật chắn vẫn có âm phản xạ

D. Cùng môi trường, vận tốc phản xạ bằng vận tốc truyền âm

Số cá số có 4 chữ số tận cùng bằng tấm là: (9998-1008):10 +1 = 900 (số)

1=Badminton

2=baseball