Mining over 2,000 years ago, copper is one of the earliest known metals.
A.mining
B.ago
C.the
D.known

He has been hoped for a rise for the last four months, but his boss is reluctant to give him one
A.has been hoped
B.last
C.to give
D.one

The top of the mountain covered with snow during winter.
A.top
B.covered
C.with
D.during

Do you want to plan for some kind of ..................trip? (excite)
A.exciting
B.excited
C.excitingly
D.excitedly

Fill in each numbered blank with one suitable word or phrase
Windsurfing is surface water sport using a windsurf board, also commonly called a (41) , usually two to five meters long and powered by a (42) sail. The rig is connected to the board by free-rotating flexible joint called the Universal Joint(U-Joint). Unlike a rudder-steered (43) a windsurfer is (44) by the tilting and rotating of the mast and sail as well as titling and carving the board.
The sport (45) aspects of both sailing and surfing, along with certain athletic aspects (46) with other board sports like skateboarding, snowboarding, waterskiing, and wakeboarding. (47) it might be considered a minimalist version of sailboat, a windsurfer offers experiences that are (48) speed record for sailing craft; and, windsurfers can (49)______ jumps, inverted loops, spinning maneuvers, and other “freestyle” (50) that cannot be matched by any sailboat.
(50)
A.changes
B.moves
C.activities
D.performances

Fill in each numbered blank with one suitable word or phrase
Windsurfing is surface water sport using a windsurf board, also commonly called a (41) , usually two to five meters long and powered by a (42) sail. The rig is connected to the board by free-rotating flexible joint called the Universal Joint(U-Joint). Unlike a rudder-steered (43) a windsurfer is (44) by the tilting and rotating of the mast and sail as well as titling and carving the board.
The sport (45) aspects of both sailing and surfing, along with certain athletic aspects (46) with other board sports like skateboarding, snowboarding, waterskiing, and wakeboarding. (47) it might be considered a minimalist version of sailboat, a windsurfer offers experiences that are (48) speed record for sailing craft; and, windsurfers can (49)______ jumps, inverted loops, spinning maneuvers, and other “freestyle” (50) that cannot be matched by any sailboat.
(49)
A.perform
B.display
C.create
D.provide

Fill in each numbered blank with one suitable word or phrase
Windsurfing is surface water sport using a windsurf board, also commonly called a (41) , usually two to five meters long and powered by a (42) sail. The rig is connected to the board by free-rotating flexible joint called the Universal Joint(U-Joint). Unlike a rudder-steered (43) a windsurfer is (44) by the tilting and rotating of the mast and sail as well as titling and carving the board.
The sport (45) aspects of both sailing and surfing, along with certain athletic aspects (46) with other board sports like skateboarding, snowboarding, waterskiing, and wakeboarding. (47) it might be considered a minimalist version of sailboat, a windsurfer offers experiences that are (48) speed record for sailing craft; and, windsurfers can (49)______ jumps, inverted loops, spinning maneuvers, and other “freestyle” (50) that cannot be matched by any sailboat.
(43)
A.boat
B.sailboat
C.sail boarding
D.sailing board

Fill in each numbered blank with one suitable word or phrase
Windsurfing is surface water sport using a windsurf board, also commonly called a (41) , usually two to five meters long and powered by a (42) sail. The rig is connected to the board by free-rotating flexible joint called the Universal Joint(U-Joint). Unlike a rudder-steered (43) a windsurfer is (44) by the tilting and rotating of the mast and sail as well as titling and carving the board.
The sport (45) aspects of both sailing and surfing, along with certain athletic aspects (46) with other board sports like skateboarding, snowboarding, waterskiing, and wakeboarding. (47) it might be considered a minimalist version of sailboat, a windsurfer offers experiences that are (48) speed record for sailing craft; and, windsurfers can (49)______ jumps, inverted loops, spinning maneuvers, and other “freestyle” (50) that cannot be matched by any sailboat.
(45)
A.refers
B.notices
C.combines
D.develops

Fill in each numbered blank with one suitable word or phrase
Windsurfing is surface water sport using a windsurf board, also commonly called a (41) , usually two to five meters long and powered by a (42) sail. The rig is connected to the board by free-rotating flexible joint called the Universal Joint(U-Joint). Unlike a rudder-steered (43) a windsurfer is (44) by the tilting and rotating of the mast and sail as well as titling and carving the board.
The sport (45) aspects of both sailing and surfing, along with certain athletic aspects (46) with other board sports like skateboarding, snowboarding, waterskiing, and wakeboarding. (47) it might be considered a minimalist version of sailboat, a windsurfer offers experiences that are (48) speed record for sailing craft; and, windsurfers can (49)______ jumps, inverted loops, spinning maneuvers, and other “freestyle” (50) that cannot be matched by any sailboat.
(47)
A.Because
B.Therefore
C.However
D.Although

Thousands of people were ...............killed in that morning. (disaster)
A.disastrously
B.disastrous
C.disasters
D.disaster