Khối lượng lí tưởng (đơn vị kg) của một người được xác định bằng công thức:
m=(h -100).0,9 trong đó h là chiều cao (đơn vị cm). Khối lượng lí tưởng của một bạn học sinh chiều cao 1,46m bằng bao nhiêu?

A.42,9kg               B.46,1kg                  C.41,4kg                       D.44,2kg

1. Khái niệm khối lượng, lực hấp dẫn, trọng lượng của vật, trọng lực.

V. Finish each of the following sentences in such a way that it is as similarly as possible in
meaning to the original sentence. Use the word given and other words if necessary. Do not
change the form of the given words.
1. It’s important that you follow all the rules at the national park. (must)
 ________________________________________________________________________
2. Ha Long Bay has many islands and caves. (there)
 ________________________________________________________________________
3. Remember to wear suncream and bring water. (forget)
 ________________________________________________________________________
4. When you want to visit Hue, you must remember to take your umbrella. (important)
 ________________________________________________________________________
5. It can be quite cold at night in Da Lat, so take some warm clothes with you. (because)
 ________________________________________________________________________
6. No lake in the world is deeper than Lake Baikal. (deepest )
 ________________________________________________________________________
7. Traveling to the beach is more interesting than traveling to the mountain (boring)
 ________________________________________________________________________
8. It's very important for you to arrive on time. (must )
 ________________________________________________________________________