Arriving (for) the lecture early is (better) than (to take) the chance of (being) late.（　）

A:for B:better C:to take D:being

(In) his (latest) article Tom criticizes the way (which) the war (is being handled).

A:In B:latest C:which D:is being handled

We'd like to clear up some points ( ) with the technical part of the contract.

A:connected B:connect C:connecting D:being connected

We' d like to clear up some points ( )with the technical part of the contract.

A:connected B:connect C:connecting D:being connected

We' d like to clear up some points ( )with the technical part of the contract.

A:connected B:connect C:connecting D:being connected

Cloud computing is a phrase used to describe a variety of computing concepts that involve a large number of computers (1) through a real-time communication network such as the Internet. In science, cloud computing is a (2)for distributed computing over a network, and means the (3) to run a program or application on many connected computers at the same time. The architecture of a cloud is developed at three layers: infrastructure, platform, and application. The infrastructure layer is built with virtualized compute, storage, and network resources. The platform layer is for general-purpose and repeated usage of the collection of software resources. The application layer is formed with a collection of all needed software modules for SaaS applications. The infrastructure layer serves as the (4)for building the platform layer of the cloud. In turn, the platform layer is a foundation for implementing the (5) layer for SaaS applications.

A:connected B:implemented C:optimized D:virtualized