bạn có biết phân biệt khối lượng với trọng lượng không đây : trọng lượng là độ lớn của lực hút trái đất tác dụng lên vật , còn khối lượng là lượng chất có trong vật

d đó bạn ơi nhà du hành vũ trụ khi ra khỏi trai đất thì trọng lượng họ mới thay đổi còn khối lượng thì không CHÚC CÁC BẠN HỌC TỐT

B không thay đổi

Chất nào sau đây tác dụng với dung dịch Ba(OH)2 tạo ra kết tủa? 

A. NaCl.

B. KCl.

C. KNO3.

D. Ca(HCO3)2.

* Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

  Do you know that your place on the family ladder may have certain effects on the sort of person you grow up to be? You may be the only child, the eldest, youngest or (31) _________ one; you may be the youngest of three boys or the eldest girl with a younger brother and sister. All the different combinations of relationships will have helped to make you the person you are. (32)________of years between your siblings and you also helps to shape your character.

  Knowing such details about your best friend or loved one (33)________also tell you about the type of friend or partner he needs. For example, a boy with a younger sister would normally (34)_________much better with a girl who has an older brother than with a girl who has a younger brother. Similarly, if your girlfriend is the oldest in her family, she would probably be more than a little domineering.

  Fortunately for all of us, family psychology is not totally accurate. There are always exceptions to the rule. Most important of all, we should always judge people (35)_________to who they are, not the relatives they have.

Điền vào số 35

A. relating

B. according

C. concerning average 

D. regarding