1. Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles.

(A) Alike
(B) may be used
(C) to heat
(D) run

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1. Penicillium is one of the many molds that procedures the antibiotics used to control diseases.

(A) is
(B) procedures
(C) used
(D) to control

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1. Some methods to prevent soil erosion are plowing parallel with the slopes of hills, to plant trees on unproductive land, and rotating crops.

(A) Some
(B) to prevent
(C) are
(D) to plant

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1. Many birds will, in the normal course of their migrations, flying more than three thousand miles to reach their winter homes.

(A) their
(B) flying
(C) more than three thousand miles
(D) to reach

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1. It is generally believed that Thomas Jefferson was the one who had researched and wrote the “Declaration of Independence” during the months prior to its signing in July 1776.

(A) It is generally believed
(B) wrote
(C) its signing
(D) in July 1776

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1. The first electric lamp had two carbon rods from which vapor serves to conduct the current across the gap.

(A) The first
(B) which
(C) serves
(D) to conduct

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1. Some important characteristics of the Baroque style was a renewed interest in ornamentation and a powerful use of both light and shade.

(A) was
(B) a renewed interest
(C) use
(D) and

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