Your portable computer has two 512-MB memory modules installed in the only two memory slots available. You need to improve the speed of your computer. What should you do？ （）
Adjust the processor scheduling to optimize for background services.
B. Connect a USB flash drive to the computer. Enable the ReadyBoost feature.
Configure the virtual memory file to exist on the same drive as the operating system.
D. Configure the local security policy setting of the computer to clear the virtual page file upon shutdown.
微信支付 
支付宝支付