2017-04-24 TOEFL: reading test, listening test

Greg Malivuk
[email protected]
http://www.pastebin.com/u/gmalivuk - notes from all classes
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http://ed.ted.com/lessons/why-do-we-itch-emma-bryce
phantom limb pain/itching
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Reading Test - p. 500-511 in your DELTA textbook - Take 15 minutes to answer the questions after each reading.
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BREAK
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1 B
2 A
3 A
4 D
5 D
6 C
7 D
8 B
9 A
10 C
11 D
12 D
13 ectotherms: C F
   endotherms: B E G (3 points for all correct, 2 points for four correct, 1 point for three correct)
	total out of 15 for the first reading
1 B
2 A
3 C
4 B
5 D
6 C
7 A
8 D
9 A
10 D
11 C
12 C
13 A D E (2 points for all correct, 1 point for two correct)
	total out of 14 for the second reading
14 C
15 D
16 A
17 C
18 D
19 B
20 C
21 A
22 B
23 C
24 D
25 A
26 D
27 A C F (2 points for all correct, 1 point for two correct)
	total out of 15 for the third reading
TOTAL: 44 points
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Listening test (p. 513)
1 A C (1 point for both correct, 0 otherwise)
2 A
3 B
4 C
5 D
	5 points
6 D
7 C
8 B
9 A
10 A
11 C
	6 points
12 B
13 A D (1 point for both correct)
14 A
15 B
16 D
17 A
	6 points
1 B
2 A
3 C
4 B D (1 point for both correct)
5 D
	5 points
6 A
7 B C (1 point for both correct)
8 A
9 D
10 C
11 D
	6 points
12 D
13 A
14 C
15 D
16 A C (1 point for both correct)
17 B
	6 points
TOTAL: 34
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combinatorics = the branch of mathematics involved with calculationg the total numbers of things that can happen
Each handshake involves a pair of people, so you want to count the number of pairs in a group of 10.
The first person shakes 9 hands, the second shakes 8 more, etc. 9+8+...+1=45
In each handshake, there are 10 choices for the first person and 9 choices for the second person. This gives 10*9. However, “I shake your hand” and “you shake my hand” are the same handshake, so we divide the result by two: 10*9/2=45.
(You can google “10 choose 2” to get this result.)