单项选择题

A．Eliminating the original vegetation from the building site.
B．Making the houses in an area similar to one another.
C．Deciding where a house will be built.
D．Surrounding a building with wildflowers and plants.
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填空题
In William Roberts’ experiment, monkeys learned to take one date because they foresaw they would be ______ in the future.
单项选择题
A．The data he collected.B．Notes from research journals.C．His research project.D．The climate changes in his hometown.
A．The data he collected.
B．Notes from research journals.
C．His research project.
D．The climate changes in his hometown.
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