______ man can now create radioactive elements, there is nothing he can do to reduce their

radioactivity.

A．As

B．Whether

C．While

D．Now that

A.While

B.Whether

C.Now that

D.As

Can the man see the manager now'？

A．Yes, he can.

B．No, he can't.

C．We are not sure.

at some of the UI elements can be grouped into user controls. You need to create a Web control to group the UI elements that do not require server-side processing. Doing so will enable you to programmatically add or remove the UI elements from the page. You want to maintain the UI elements‘ style properties.What should you do？ （）

A. Use System.Web.UI.TemplateControl to group the UI elements.

B. Use System.Web.UI.HtmlControls.HtmlControl to group the UI elements.

C. Use System.Web.UI.LiteralControl to group the UI elements.

D. Use System.Web.UI.WebControls.Literal to group the UI elements.

Why can't the man find out if he gets the job now？

A．Because the woman thinks he is not qualified.

B．Because there are too many people applying for the job.

C．Because the woman can't make the final decision.

D．Because the man doesn't have letters of recommendation.

(The age of) a geological sample can (be estimated) from the ratio of radioactive to nonradioaetive carbon (present) in the object (is examined).

A．The age of

B．be estimated

C．present

D．is examined

(The age of) a geological sample can (be estimated) from the ratio of radioactive to nonradioaetive carbon (present) in the object (is examined).

A．The age of

B．be estimated

C．present

D．is examined