1) What is the effect of lightning strikes ?

A. It can start hundreds of forest fires every year.

B. It can light hundreds of lamps every day.

C. It can make the temperature hotter.

D. It can create electricity.

E. It can redeem the thunder.

=> Paragraph 1: "Lightning also starts hundreds of forest fires every year." Efek dari sambaran petir menurut paragraf 1 pada teks, bisa menyerang orang atau bahkan membunuh orang, dan membakar ratusan hutan tiap tahun.

2) We can see lightning before hearing the thunder because...

A. the air is heated so quickly

B. lightning heats up the air

around it

C. it expands and contracts violently, much like a balloon bursting

D. negative and positive charges of the ground meet

E. light travels almost a million times faster than sound

=> Last sentence : "This is because light travels almost a million times faster than sound."

3) Lightning heats up the air around it to temperatures up to 30,000 degrees Celsius." (paragraph 4) The underlined word refers to....

A. lightning

B. the air

C. the temperature

D. the flash

E. the cloud

=> Biasanya kata 'it' itu tertuju untuk subjek atau objek sebelum kata'it'. Jadinya; Cahayamemanaskan udara disekitarnya. Jadi benar yang B. the air.

4) "Lightning can strike people and even kill them." The underlined word can be replaced with..

A. hit

B. defeat

C. make

D. lose

E. break

=> Strike = Menyerang. Yang paling tepat yang A. hit karena yang lainnya tidak tepat sama sekali. Bisa dicek di Google Translate atau kamus.

5) What happens if negative charges from the bottom of the cloud and positive charges of the ground meet ?

A. There is a fraction of a second.

B. A thunder occurs.

C. Lightning heats up.

D. A flash is seen.

E. Lightning and thunder happen in the same time.

=> Paragraph 3: "When negative charges from the bottom of the cloud and positive charges of the ground meet, a flash is seen."

6) ... it expands and contracts violently,...: The word "it" refers to....

A the lightning

B. the sun

C. the air

D. the explosion

E. the balloon

=> Sama seperti nomor 3, dengan melihat subjek atau objek sebelum kata 'it'.

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Sorry if my answers are incorrect and unclear, hope these answers help you