Đề 16: Đề thi toefl itp 15 câu đầu

Resin is a substance that —in water.

—hardiness, daylilies can be cultivated particularly easily.

A biologist does not merely describe organisms, but tries to learn —act as they do.

Vaporization in connection with general — has a marked effect on long – term climate.

The oldest city in the state, — .

Mary Edmonia Lewis, a sculptor who studied at Oberlin College, was _____ by Hrrietffosmer.

Even though rhubarb is a vegetable, _____ as a dessert.

Elizabeth Cabot Agassiz, _____ of Radeliffe College, had worked as both an educator and a naturalist.

_____ ever developed was celluloid, a combination of natural camphor and cellulose nitrate.

Often the design of a scholarly investigation _____ by the question it is addressing.

Early forms of life on Earth, _____ in the absence of oxygen, required elements such as sulfur instead.

People in prehistoric times created paints by grinding materials such as plants and clay into powder _____.

Often very annoying weeds, _____ and act as hosts to many insect pests.

Starting around 7000 B. C., and for the next four thousand years, much of the Northern Hemisphere _____ temperatures warmer than at present.

In the nineteenth century, Samuel Gridley Howe founded the Pekins School for the Blind, _____ for children in Boston, Massachusetts.