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=>ANSWER: G

1. Regular amounts of exercise


In paragraph 9, the writer says: “Maintaining a level of daily physical activity may help mental functioning,¼¼, may prevent the brains of active humans from deteriorating”, which means that regular amounts of exercise may help prevent mental decline.

+ regular amount of exercise = level of daily physical activity

=>ANSWER: E

1. Feelings of control over life

The connection between feeling of control and stress is mentioned in paragraph 10: “¼ found a connection between self-esteem and stress in people over 70. In laboratory simulations of challenging activities such as driving, those who felt in control over their lives pumped out lower levels of stress hormones such as cortisol.”

So feelings of control over life can reduce stress in difficult situations.

+ difficult situations= challenging activities

=>ANSWER: H

1. Feelings of loneliness

In paragraph 11, the writer says: ” ¼.elderly people who felt emotionally isolated maintained higher levels of stress hormones even when asleep.”

This means that feelings of loneliness may cause rises in levels of stress hormones.

+ feelings of loneliness ~ to feel emotionally isolated

=>ANSWER: C

CAMBRIDGE IELTS 6 – TEST 2 – PASSAGE 3

Questions 27-31:

Complete each sentence with the correct ending.

1. 
   A developed system numbering A. Was necessary in order to fulfil a civic role.
   
2. 
   An additional hand signal B. Was necessary whe peop began farming.
   
3. 
   In seventh- century Europe C. Was necessary for the development of arithmetic the ability to count to a certain number
   
4. 
   Thinking about numbers as D. Persists in all societies. concepts separate from physical objects
   
5. 
   Expressing number differently E. Was used when the range of number words according class of item was restricted.
   
6. 
   Canbetraced back to early European languages G.Was characteristicof early numeration systems.
   

1. A developed system of numbering


In the second paragraph, it is stated that: “As they (refer to “early humans” mentioned in the previous sentence) began to settle, grow plants and herd animals, the need for a sophisticated number system became paramount.”

+ farming = settle, grow plants and herd animals

+ a developed system of numbering = a sophisticated number system

+ necessary = paramount

So, a developed system of numbering was necessary when people began farming.