11 Archaeologists have discovered fossils of million-year-old animals in excavations.
A remnants
B graves
C records
D paws
12 The oldest preserved manuscripts are those written on papyrus，which were found in Egyptian tombs.
A protected
B hidden
C sought
D discovered
13 Mary frosted the cake.
A served
B iced
C split
D cooled
14 In the first decades of the twentieth century，the individual gene could not be seen，but could be worked with fruitfully.
A blindly
B completely
C productively 中華考試網(wǎng)
D carefully
15 Grounded whales often struggle fruitlessly to reenter deep water.
A violently
B desperately
C in vain
D at length
答案： 11A 12D 13B 14C 15
A remnants
B graves
C records
D paws
12 The oldest preserved manuscripts are those written on papyrus，which were found in Egyptian tombs.
A protected
B hidden
C sought
D discovered
13 Mary frosted the cake.
A served
B iced
C split
D cooled
14 In the first decades of the twentieth century，the individual gene could not be seen，but could be worked with fruitfully.
A blindly
B completely
C productively 中華考試網(wǎng)
D carefully
15 Grounded whales often struggle fruitlessly to reenter deep water.
A violently
B desperately
C in vain
D at length
答案： 11A 12D 13B 14C 15