通过下列问题请说明for和to的用法区别您好,ammesty听说您英语棒极了,我马上就要考试了,请问for和to怎么区别?这些题为什么有一些选for的选项,有一些选to的?下列哪个选项是对的（原句跟A选项相同,但是不一定是对的）Q1.Scientists claim that the discovery of the first authenticated mammal bones in amber could provide important clues in the determination of how and when the islands of the West Indies were colonized by mammals.A.\x05in the determination of how and when the islands of the West Indies were colonized by mammalsB.\x05to determine how mammals

通过下列问题请说明for和to的用法区别
您好,ammesty听说您英语棒极了,我马上就要考试了,
请问for和to怎么区别?这些题为什么有一些选for的选项,有一些选to的?
下列哪个选项是对的（原句跟A选项相同,但是不一定是对的）
Q1.Scientists claim that the discovery of the first authenticated mammal bones in amber could provide important clues in the determination of how and when the islands of the West Indies were colonized by mammals.
A.\x05in the determination of how and when the islands of the West Indies were colonized by mammals
B.\x05to determine how mammals colonized the islands of the West Indies and when they did
C.\x05for determining how and when mammals colonized the islands of the West Indies
Answer:C
17.GWD-26-Q17
Responding to the public’s fascination with-and sometimes undue alarm over-possible threats from asteroids,astronomers have developed a scale to rate how likely a particular asteroid or comet will be to collide with Earth.
A.astronomers have developed a scale to rate how likely a particular asteroid or comet will be to
B.astronomers have developed a scale for rating the likelihood that a particular asteroid or comet will
Answer：A
（1）GWD-18-Q19
New genetic evidence—together with recent studies of elephants’ skeletons,tusks,and other anatomical features—provide compelling support for classifying Africa’s forest elephants and its savanna elephants as separate species.
A.\x05provides compelling support for classifying
B.\x05provides compelling support to classify
Answer：A
GWD-25-Q20
Most states impose limitations on the authority of the legislature to borrow money,with their objectives being to protect taxpayers and the credit of the state government.
A.to borrow money,limitations intended to protect.
B.for borrowing money,limitations with the intent of protecting.
Answer：A
The Near Earth Asteroid Rendezvous (NEAR) spacecraft will orbit the asteroid Eros for a year,slowly moving closer to the surface of the object to make ever more precise measurements that scientists hope will enable them to understand how the solar system formed some four billion years ago.
A.to make ever more precise measurements that scientists hope will enable them to
B.for making ever more precise measurements,and scientists hope that they will be able to
Answer：A