6 The first watermill was horizontal and resembled a rudimentary turbine.
A．a(chǎn) flat
B．a(chǎn) rusty
C．a(chǎn)n unconventional
D．a(chǎn)n unsophisticated
7 Eyespots，the most rudimentary eyes， are found in protozoan flagellates，flatworms，and segmented worms.
A．hostile-looking
B．perceptive
C．primitive
D．strangely formed
8 Extending from Quebec to Alabama，the Appalachian Mountain region is extensive and very scenic.
A．vast
B．rustic
C．fertile
D．picturesque
9 In times of economic difficulty，corporate budgets for research and development are often slashed before any others.
A．shifted
B．cut
C．examined 中華考試網(wǎng)(www．Examw。com)
D．presented
10 Hoof-and-mouth disease was eliminated in the United States by slaughtering affected herds of cattle.
A．isolating
B．testing
C．vaccinating
D．killing
答案：6D 7C 8D 9B 10D
A．a(chǎn) flat
B．a(chǎn) rusty
C．a(chǎn)n unconventional
D．a(chǎn)n unsophisticated
7 Eyespots，the most rudimentary eyes， are found in protozoan flagellates，flatworms，and segmented worms.
A．hostile-looking
B．perceptive
C．primitive
D．strangely formed
8 Extending from Quebec to Alabama，the Appalachian Mountain region is extensive and very scenic.
A．vast
B．rustic
C．fertile
D．picturesque
9 In times of economic difficulty，corporate budgets for research and development are often slashed before any others.
A．shifted
B．cut
C．examined 中華考試網(wǎng)(www．Examw。com)
D．presented
10 Hoof-and-mouth disease was eliminated in the United States by slaughtering affected herds of cattle.
A．isolating
B．testing
C．vaccinating
D．killing
答案：6D 7C 8D 9B 10D