Orações condicionais e interpretação de texto em inglês

Orações condicionais e interpretação de texto em inglês
01. If ( ) invites me, I will go to the party. (Se ele me convidar, eu irei à festa.)
(a) we (b) I (c) He (d) We and he
02. If she ( ) me, I go. (Se ela me convidar, eu irei.)
(a) invite (b) invites (c) to invite (d) inviting
03. If he invites me, I ( ) go. (Se ele me convidar, eu posso ir)
(a) must (b) need (c) should (d) can
04. I had money, I would buy an ice cream. (Se eu tivesse dinheiro, eu compraria um sorvete.)
(a) possível (b) provável (c) impossível (d) improvável
05. If I had money, I ( ) buy na ice cream. (Se eu tivesse dinheiro, eu poderia comprar um sorvete)
(a) could (b) can (c) would (d) Will
06. If I ( ) you, I wouldn't touch that dog. (Se eu fosse você, eu não tocaria aquele cachorro.)
(a) was (b) am (c) is (d) were
07. If you ( ) in my place, what would you do? (Se você estivesse no meu lugar, o que você faria?)
(a) was (b) am (c) is (d) were
08. Expressa uma condição irreal, impossível:

(a) If you had seen the movie, you would have liked it. (Se você tivesse visto o filme, você teria gostado.)
(b) If you drink too much, you get drunk. (Se você beber demais, você fica bêbado.)
(c) It would be nice if you helped your brother. (Seria legal se você ajudasse seu irmão.)
(d) It can be dangerous if he come back. (Pode ser perigoso se ele voltar.)

09 If Jack ( ) there, he would defend you. (Se o Jack estivesse lá ele te defenderia)
(a) was (b) am (c) is (d) were
10. If I knew his address, I would tell you. (Se eu soubesse o endereço dele eu lhe diria.) Would = ( ).
(a) could (b) should (c) can (d) might
Observação: Regra típica do inglês britânico válida para a 1ª pessoa (do singular e do plural)
11. I'd have called you if you had given me your number. (Eu teria ligado para você se você tivesse me dado seu número.)
(a) ’d = abreviação de should/would (b) ’d = caso genitivo
(c) ’d =elemento nominal (d) ’d = verbo principal

12. Please tell ( ) you want to come. (Por favor, me diz se você quer vir.)
(a) unless (b) providing (c) ought to (d) whether
13. I will go to the party p( ) he goes too. (Eu irei à festa desde que ele também vá.)
(a) unless (b) providing (c) ought to (d) whether
14. He was informed we could be brave ( ) he studied. (Ele foi informado que poderíamos ficar bravos a menos que estudasse.)
(a) unless (b) providing (c) ought to (d) whether
15. Read and answer:
Bats Find Their Way With Superfast Vocal Muscles
The last thing an insect hears before it is eaten by a bat is what scientists call the terminal buzz, a sonar-based call that bats use to track their prey. Bats can produce these echolocation calls at a rapid rate, up to 190 calls per second; they also use the buzz to navigate.
It was never known precisely how they produced these calls so quickly. But now scientists are reporting that bats are able to make these calls thanks to superfast vocal muscles; they are the first mammals known to have this type of muscle. The muscles are very weak, but so quick that they can contract 100 times as fast as ordinary human muscles and 20 times the speed of humans’ fastest muscles, the ones in the eye.
Until now, superfast muscles had been found only in songbirds, rattlesnakes and certain fish, all of which use them to produce sound. Researchers at the University of Southern Denmark and the University of Pennsylvania wanted to see if they existed in mammals as well, which led them to look at Daubenton’s bat, a species found throughout Europe and Asia.
“I thought, ‘If we’re going to find them in mammals, it’s going to be bats,’ ” said an author of the study, Coen Elemans, an assistant professor at Southern Denmark. “If you hunt prey that is fast-moving and also evading you, it’s very important to produce these calls at a very, very high rate.”
In their study, which appears in Science, Dr. Elemans and his colleagues recorded the bats’ calls and determined when the echoes reached their ears. The scientists found that the bats’ brains could process the sounds even faster than their muscles could generate them: up to 800 calls per second, in some cases, before the calls would start to overlap with the echoes and cause confusion.
http://www.nytimes.com/2011/10/04/science/04bat.html?_r=1&ref=science
02/10/2011, 16:57

a) What can bats do?
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b) For bats, the superfast vocal muscles are important. Mention two reasons.
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c) Why isn’t there confusion when bats can produce these echolocation calls at a rapid rate?
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