Составьте уравнение реакций никеля со следующими веществами и подсчитайте сумму коэффициентов в нем:
1)водой( в том числе и при нагревании); 2) фосфором; 3) хлором; 4) разбавленной серной кислотой

отметь ряд в котором все слова начинаются с согласного звука.1.экспонат,шерсть,лоб.2.хобот,бивни.охотник.3.животное,эпоха,мамонт

1. Choose the correct word from a, b or c.

1 Brian _____ me since March.

a. has not phoned        b. have not phoned      c. have phoned

2 Employees _________ bad language at work.

a. mustn’t use      b. must use c. must to use

3 What _______ in your job exactly?

a. have you to do b. do you have to do     c. do you have do

4 _________ the boss about our mistakes?

a. we must tell     b. do we must tell          c. Must we tell

5 I ______ work very long hours.

a. not have to       b. doesn’t have to         c. don’t have to

6Moscowis _____ thanNovosibirsk.

a. bigger     b. big c. the biggest

7 _____ CV with a cover letter?

a. I should send   b. Should I send   c. Do I should send

8Cambridgeis one of _____ cities inEurope.

a. old b. older than        c. the oldest

9 You _______ the advice of your parents and friends.

a. should not ignore      b. should ignore   c. should to ignore

10Madridis _______Rome.

a. expensive than b. more expensive than          c. most expensive than