Ира М(С4Н10) = 4*12 + 10*1 = 58 г/моль
ω(C) = 4*12 / 58*100% = 82,8%
М(С5Н12) = 5*12 + 12*1 = 72 г/моль
ω (C) = 5*12 / 72*100% = 83,3%
Задание
Развернуть задание
Put the verbs in brackets into the correct form. Give reasons.
1 A: You haven’t stopped … (use) that credit card, have you?
B: I know. I really can’t go on … (spend) so much.
2 A: Did you remember … (by) the meat for dinner?
B: Oops! I remembered everything else, but I completely forgot … (do)
that!
3 A: I remember … (go) to the bank to pay that bill, but I can’t find the
receipt.
B: Try … (call) them to see if they have a record of the transaction.
4 A: Could you stop … (buy) some drinks for the party on your way home?
B: Sure! I’ll try … (call) Tim to invite him too. I couldn’t reach him earlier.
5 A: James is going on … (study) law after he finishes school.
B: Oh really? I thought he preferred … (learn) languages.
1 A: You haven’t stopped … (use) that credit card, have you?
B: I know. I really can’t go on … (spend) so much.
2 A: Did you remember … (by) the meat for dinner?
B: Oops! I remembered everything else, but I completely forgot … (do)
that!
3 A: I remember … (go) to the bank to pay that bill, but I can’t find the
receipt.
B: Try … (call) them to see if they have a record of the transaction.
4 A: Could you stop … (buy) some drinks for the party on your way home?
B: Sure! I’ll try … (call) Tim to invite him too. I couldn’t reach him earlier.
5 A: James is going on … (study) law after he finishes school.
B: Oh really? I thought he preferred … (learn) languages.
Развернуть задание
Новое решение
Решение
1 A: You haven’t stopped using that credit card, have you?
(cessation of action; прекращение действия)
B: I know. I really can’t go on spending so much.
(continuation of action, продолжение действия)
2 A: Did you remember to buy the meat for dinner?
(action is not performed; действие не совершено)
B: Oops! I remembered everything else, but I completely forgot to do that!
(action is not performed; действие не совершено)
3 A: I remember going to the bank to pay that bill, but I can’t find the receipt.
(action is performed; действие совершено)
B: Try calling them to see if they have a record of the transaction. (doing an
experiment; проведение эксперимента)
4 A: Could you stop to buy some drinks for the party on your way home?
(purpose; цель)
B: Sure! I’ll try to call Tim to invite him too. I couldn’t reach him earlier.
(making an effort; совершение попытки)
5 A: James is going on to study law after he finishes school.
(changing activities; смена видов деятельности)
B: Oh really? I thought he preferred learning languages.
(in general; в общем)
(cessation of action; прекращение действия)
B: I know. I really can’t go on spending so much.
(continuation of action, продолжение действия)
2 A: Did you remember to buy the meat for dinner?
(action is not performed; действие не совершено)
B: Oops! I remembered everything else, but I completely forgot to do that!
(action is not performed; действие не совершено)
3 A: I remember going to the bank to pay that bill, but I can’t find the receipt.
(action is performed; действие совершено)
B: Try calling them to see if they have a record of the transaction. (doing an
experiment; проведение эксперимента)
4 A: Could you stop to buy some drinks for the party on your way home?
(purpose; цель)
B: Sure! I’ll try to call Tim to invite him too. I couldn’t reach him earlier.
(making an effort; совершение попытки)
5 A: James is going on to study law after he finishes school.
(changing activities; смена видов деятельности)
B: Oh really? I thought he preferred learning languages.
(in general; в общем)
1 A: You haven’t stopped using that credit card, have you?
(cessation of action; прекращение действия)
B: I know. I really can’t go on spending so much.
(continuation of action, продолжение действия)
2 A: Did you remember to buy the meat for dinner?
(action is not performed; действие не совершено)
B: Oops! I remembered everything else, but I completely forgot to do that!
(action is not performed; действие не совершено)
3 A: I remember going to the bank to pay that bill, but I can’t find the receipt.
(action is performed; действие совершено)
B: Try calling them to see if they have a record of the transaction. (doing an
experiment; проведение эксперимента)
4 A: Could you stop to buy some drinks for the party on your way home?
(purpose; цель)
B: Sure! I’ll try to call Tim to invite him too. I couldn’t reach him earlier.
(making an effort; совершение попытки)
5 A: James is going on to study law after he finishes school.
(changing activities; смена видов деятельности)
B: Oh really? I thought he preferred learning languages.
(in general; в общем)
(cessation of action; прекращение действия)
B: I know. I really can’t go on spending so much.
(continuation of action, продолжение действия)
2 A: Did you remember to buy the meat for dinner?
(action is not performed; действие не совершено)
B: Oops! I remembered everything else, but I completely forgot to do that!
(action is not performed; действие не совершено)
3 A: I remember going to the bank to pay that bill, but I can’t find the receipt.
(action is performed; действие совершено)
B: Try calling them to see if they have a record of the transaction. (doing an
experiment; проведение эксперимента)
4 A: Could you stop to buy some drinks for the party on your way home?
(purpose; цель)
B: Sure! I’ll try to call Tim to invite him too. I couldn’t reach him earlier.
(making an effort; совершение попытки)
5 A: James is going on to study law after he finishes school.
(changing activities; смена видов деятельности)
B: Oh really? I thought he preferred learning languages.
(in general; в общем)