Предмет: Химия, автор: parkoour2001

В 100 г 20%-го раствора соли добавили 300 г её 10%-го раствора. Определите процентную концентрацию раствора.

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Автор ответа: jnona

решение во вложении )))))))))))))))))))))))))))

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Предмет: Английский язык, автор: DragonsLover775

ДАЮ 100 БАЛЛОВ!! ЭТО СРОЧНО!!!

4 Complete the sentences with the words below. There are three extra words.
both each every a few a little many much no

1 I have two brothers and although ___________ of them love sport, only one of them is good at it.
2 ___________ of my classmates signed the card when I left school. Every single one of them! I’ll keep the card forever.
3 We had to cancel the show because only ___________ people bought tickets.
4 ___________ students arrived late because they all wanted to be early to get a good seat.
5 There aren’t ___________ westerns I really like.

Vocabulary
5 Replace the words in italics with the correct form of the words or phrases below. Add the missing word in each phrase when necessary. There are two extra phrases.
be wary ___ envy feel sorry ___ have a lot in common ___ look ___ to not see eye ___ eye respect
1 I really admire my uncle. He’s a successful businessman, and an example I want to follow in life.
I __________________________________ my uncle.
2 My sister and I don’t agree on anything. We have such different points of view and are always arguing.
We __________________________________ on anything.
3 I share the same interests as John. We both like science fiction films and board games.
I __________________________________ John.
4 I don’t really trust Matthew. I never know what he’s going to say next, and I worry whether he’s lying or not.
I __________________________________ Matthew.
5 I have a lot of sympathy for Claire. Her grandmother died recently, and she’s feeling upset.
I __________________________________ Claire.

6 Choose the correct verbs to complete the sentences.

1 Everybody ___ me on how well I had organised the event. I was very pleased to hear such praise.
a nagged b lectured c complimented
2 In class, Jill got the teacher’s name wrong, and everybody laughed. Her classmates have been ___ Jill about it ever since, but she doesn’t think it’s funny.
a teasing b praising c flattering
3 My mum has been ___ me to get my hair cut for days. But I don’t want to get it cut! I like it long.
a flattering b nagging c insulting
4 I felt really ___ when the sports coach said I was too lazy to be in the team. I have worked hard at my fitness and I thought he was just being rude.
a offended b teased c flattered
5 On the school trip to the coast, the teacher ___ us about getting too close to the sea wall because it was dangerous.
a praised b insulted c warned

7 Choose the correct phrasal verbs to complete the sentences.
1 I didn’t want to get a part-time job, but my friends ___ applying for one. I’m glad they did.
a talked me into b turned me down c picked me up
2 Gary promised to help organise the trip, but in the end, he ___ . He went away for the weekend and didn’t help at all.
a called me off b let me down c put me down
3 I won’t ___ all that noise any longer! Turn the music down! I won’t ask you again!
a get over b make up c put up with
4 I felt very upset when we lost in the final. It’s not easy to ___ such a big disappointment. It takes time to stop thinking about it.
a get over b put through c bring up
5 Jeff ___ his father. He looks just like him, and has a similar personality.
a runs into b picks up c takes after
6 Tom has ___ . They’re going to the cinema on Friday. I’m surprised. I didn’t know he liked her.
a asked Lucy out b put Lucy down c called Lucy off

8 Match the words below with the phrases in italics which have a similar meaning. There are two extra words.
gene mate offspring organ paper proof
1 Despite many studies, scientists have yet to find evidence that the condition can be inherited. __________________
2 Many species of bird stay with the same partner for their whole adult lives. __________________
3 The liver is an internal body part that is capable of regenerating itself to some extent. __________________
4 An important academic article recently showed that we share more of our DNA with reptiles than we once thought

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