（A） all one has to do with cattle is leave them alone while they feed themselves， corral them， and to
（B） all one has to do with cattle is to leave them alone to feed themselves， to corral them， and
（C） all one has to do with cattle is leave them alone while they feed themselves and then corral them and
（D） the only thing that has to be done with cattle is leave them alone while they feed themselves， corral them， and
（E） the only thing that has to be done with cattle is to leave them alone while they feed themselves， to corral them， and
9. In recent years cattle breeders have increasingly used crossbreeding， in part that their steers should acquire certain characteristics and partly because crossbreeding is said to provide hybrid vigor.
（A） in part that their steers should acquire certain characteristics
（B） in part for the acquisition of certain characteristics in their steers
（C） partly because of their steers acquiring certain characteristics
（D） partly because certain characteristics should be acquired by their steers
（E） partly to acquire certain characteristics in their steers
10. As the etched lines on computer memory chips have become thinner and the chips' circuits more complex， both the power of the chips and the electronic devices they drive have vastly increased.
（A） the chips' circuits more complex， both the power of the chips and the electronic
devices they drive have
（B） the chip's circuits more complex， the power of both the chips and the electronic
devices they drive has
（C） the chip's circuits are more complex， both the power of the chips and the
electronic devices they drive has
（D） their circuits are more complex， the power of both the chips and the electronic
devices they drive have
（E） their circuits more complex， both the power of the chips and the electronic
devices they drive have
11. The computer software being designed for a project studying Native American access to higher education will not only meet the needs of that study， but also has the versatility and power of facilitating similar research endeavors
（A） but also has the versatility and power of facilitating
（B） but also have the versatility and power to facilitate
（C） but it also has the versatility and power to facilitate
（D） and also have the versatility and power of facilitating
（E）and it also has such versatility and power that it can facilitate
