But a C grade or above in GCSE English is also a key element on which national league tables are based, increasing pressure on teachers to ensure their students get the best results possible.

BBC: GCSE English: How is it marked?

C-MAX Energi operates just like a traditional hybrid with two key differences - owners must plug in the vehicle using its charge port and C-MAX Energi has a larger battery pack.

ENGADGET: Ford's 2013 C-Max Energi rolls out 95 MPGe, arrives later this fall

With a study released this morning, Vertex Pharmaceuticals cemented a key advantage in what is expected to be a booming new market for hepatitis C drugs this morning, increasing its edge over Merck, its main competitor.

FORBES: Vertex's Big Advantage

C-Max pops up in the new ABC reality cooking show The Taste and will be a key part of challenges on the March 8 episode.

FORBES: C-Max Delivers On Ford Game Plan: Take A Bite Out Of Prius

The weekly on-balance volume (OBV) has been in a narrow range for the past four months, and is now testing key resistance (line c).

FORBES: A Green Light For Gold Prices?