Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

Each time you turn it on, with appropriate hardware and software, it is capable of doing almost anything you ask.

A. ill-prepared

B. unimportant

C. unsuitable

D. irregula

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSET in meaning to the underlined word(s) in each of the following questions.

Roget's Thesaurus, a collection of English words and phrases, was originally arranged by the ideas they express rather than by alphabetical order.

A. unless

B. as well as

C. restricted

D. instead of

Thực hiện các thí nghiệm sau:

(1) Cho AgNO₃ vào dung dịch FeCl₃;

(2) Cho bột Fe vào dung dịch Fe₂(SO₄)₃

(3) Cho Ca(NO₃)₂ vào dung dịch BaCl₂;

(4) Sục khí Cl₂ vào dung dịch FeSO₄

(5) Cho HCl vào dung dịch Fe(NO₃)₂;

(6) Cho Fe(NO₃)₂ vào dung dịch AgNO₃.

Số thí nghiệm có phản ứng hóa học xảy ra là

A. 5

B. 4

C. 6

D. 3